User Panel
Hey, brother. The ERGO Z-float rails will be discontinued when stock runs out. Regular z-rail for carbine length will stay.
All ERGO superlite and ultralite free float rails should work with the Superlative arms system. |
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thank you. I'll get those up next
next update plans: M.I. barrel nut diagram URGO d.d. UTG seekins edit*** oh and geissele also, feel free to post pics of your system with the rail. If you do please list who makes the system, what configuration it is in (IE .750 or .625, etc) barrel length, handguard and length and if there was anything special you needed to do in order for it to fit. Thank you. |
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Originally Posted By hoody2shoez:
Finished my Adams arms to superlative tonight to fit an mcmr-it’s tight but has 360 clearance. One thing to note-the Adams arms uppers have a gas tube hole specifically cut for their op rod. It happens to fit superlatives op rod perfectly with the exception that the bushing will not fit. My pics https://image.ibb.co/m027ff/721-AFBD5-DF52-4162-B29-B-397-F0-E6-B4-AFE.jpg https://image.ibb.co/eMBYLf/7458006-E-39-B1-4-E29-BAC2-F00-E798-E1-CB1.jpg https://image.ibb.co/gjWYLf/C1-D0-A080-337-C-45-DD-B1-CC-7971-AA7-EF16-D.jpg https://image.ibb.co/fSnjRL/F4960264-136-C-44-B8-AB64-C6614-D6-EA709.jpg https://image.ibb.co/kZtf0f/9-F4-B88-A4-880-A-4200-BF84-091-C13026-B0-F.jpg https://image.ibb.co/k4LSff/3191-F374-06-E2-433-D-9581-E55469-ACC58-C.jpg More updates inbound this weekend hopefully View Quote |
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Originally Posted By InfamousAK: Can you run that in a .300 Blackout and tell me how it goes? I have a pistol lower and the BCM 12.5 Upper in .300 Blackout and was thinking of doing it to mine! I know a little off topic but you would be doing me a favor?! Please? I heard its a no no to do that but not sure, would rather someone with some more funds try it out first that can afford to break their shit, because I can't. View Quote |
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Originally Posted By InfamousAK: Can you run that in a .300 Blackout and tell me how it goes? I have a pistol lower and the BCM 12.5 Upper in .300 Blackout and was thinking of doing it to mine! I know a little off topic but you would be doing me a favor?! Please? I heard its a no no to do that but not sure, would rather someone with some more funds try it out first that can afford to break their shit, because I can't. View Quote |
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Originally Posted By AA_Phil: Adams Arms has a 300 Blackout kit that will work on subs and supers, https://www.adamsarms.net/300blk-piston-kit-p-series-adjustable-micro-block. View Quote And hoody2shoez thanks for the information as well, really appreciate you doing the pictures please share more! I built my own version of the SR-16 11.5 (5.56) Inch Upper, sort of, but I do have the URX 3.1 Rail on it and Looking through at both uppers it seems that there is more clearance with the URX 3.1 but it's also not a .300 Blackout barrel, would you know if SA Piston Kit would be compatible the URX 3.1, or even be able to try it if you own one and post pics? |
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Originally Posted By InfamousAK: Thanks, much appreciation for it, and it would definitely work with the BCM MCMR 10 Inch Rail? And hoody2shoez thanks for the information as well, really appreciate you doing the pictures please share more! I built my own version of the SR-16 11.5 (5.56) Inch Upper, sort of, but I do have the URX 3.1 Rail on it and Looking through at both uppers it seems that there is more clearance with the URX 3.1 but it's also not a .300 Blackout barrel, would you know if SA Piston Kit would be compatible the URX 3.1, or even be able to try it if you own one and post pics? View Quote I believe the superlative arms does fit under the urx 3.1. I will double check the dimensions and get back to you. ***EDIT TO THE BOLD*** The Adams arms micro/xlp WILL fit under an mcmr. The barrel nut is going to b the limiting factor. See phil’s comment a few posts down. You will need to cut out a notch on the mcmr barrel nut to match the dimensions for a mil spec barr k nut. The length needs to be .85” |
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Originally Posted By hoody2shoez: The Adams arms kit IS NOT compatible with the bcm kmr-a or mcmr. I believe the superlative arms does fit under the urx 3.1. I will double check the dimensions and get back to you. View Quote |
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Originally Posted By InfamousAK: Thanks, much appreciation for it, and it would definitely work with the BCM MCMR 10 Inch Rail? And hoody2shoez thanks for the information as well, really appreciate you doing the pictures please share more! I built my own version of the SR-16 11.5 (5.56) Inch Upper, sort of, but I do have the URX 3.1 Rail on it and Looking through at both uppers it seems that there is more clearance with the URX 3.1 but it's also not a .300 Blackout barrel, would you know if SA Piston Kit would be compatible the URX 3.1, or even be able to try it if you own one and post pics? View Quote -Phil- |
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The Superlative Arms solid-block, .625" gas journal, mid-length system is compatible with the Leapers/UTG Pro handguards. MTU019SS (15" version) fits great on a 16" barrel.
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Here is a image provided to me by AA on the barrel nut modification and some instructions. I am in the same boat as others but worse by the fact that I need a handgaurd for a 7.5" barrel. There is little to nothing out there with a GI barrel nut in lengths shorter than 7". In any case hope this image and information helps. In for answers and to contribute.
Attached File "You will see that some of the rails say that there is a modification needed to the barrel nut in order for them to fit correctly. This is done by cutting a “channel” or “seat” into the barrel nut itself, you would want to install it and time the barrel nut first. Then measure from the receiver towards the muzzle .85 inches. and make your mark on the barrel nut. This way the Drive rod bushing can sit properly and allow the approximately ½ inch of travel needed for the drive rod. the diagram attached shows an example of this mod." |
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Insecurity is loud, confidence is quiet.
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Bump to keep this out of archives
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Bought a .750 SA piston kit for my 16" build (lo pro). The dimples are drilled in the barrel so it's ready to go but but holy fuck, I had no idea it would be this hard to find a FF tube to fit. I had a STNGR VYPER rail that's amazing quality and design but of course it doesn't fit soooooo I need recommendation of an M-Lok tube that looks as close to the Vyper and of course, and close to them in price. I definitely want one that uses a barrel nut that is similar to Stngr's ( I do not want one that uses a nut that requires lining up holes). So far, none of the ones mentioned in this thread meet my requirements.
When I called SA they did not have a good answer or an approved list of compatible handguards, they were correct though that the handguard mfgs do a terrible job of showing all dimensions where the actual piston gas block goes. |
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Originally Posted By NinjaZX6R:
Bought a .750 SA piston kit for my 16" build (lo pro). The dimples are drilled in the barrel so it's ready to go but but holy fuck, I had no idea it would be this hard to find a FF tube to fit. I had a STNGR VYPER rail that's amazing quality and design but of course it doesn't fit soooooo I need recommendation of an M-Lok tube that looks as close to the Vyper and of course, and close to them in price. I definitely want one that uses a barrel nut that is similar to Stngr's ( I do not want one that uses a nut that requires lining up holes). So far, none of the ones mentioned in this thread meet my requirements. When I called SA they did not have a good answer or an approved list of compatible handguards, they were correct though that the handguard mfgs do a terrible job of showing all dimensions where the actual piston gas block goes. View Quote The dimensions are relatively similar as listed for the vypr-please post some pics |
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Originally Posted By hoody2shoez: What part doesn’t fit? Do you have pictures for reference? You could always use a BCM MCMR. Mine fits with a clamp on. The dimensions are relatively similar as listed for the vypr-please post some pics View Quote |
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Originally Posted By NinjaZX6R: The width of the gas block lobe is too wide to fit in the opening under the rail, heigth wise it's fine, the gas block is like .410 or .420 wide and the opening in the FF tube I believe was like .370 (been a bit since I measured it). I specifically chose the non-clamp on to make sure it would fit. I dont like the appearence of the BCM units, no pics. View Quote |
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I see your update. The new Adams arms rails would work and look fairly similar. I’m checking out the vltor freedom right now, a few seekins offerings, and the fortis switch. I’ll keep posting as I find more. If one suggestion catch’s your eye let me know.
Also—-Samson sxs series Sxs ***EDIT*** CMT UHPR HRX fits |
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Originally Posted By hoody2shoez:
I see your update. The new Adams arms rails would work and look fairly similar. I’m checking out the vltor freedom right now, a few seekins offerings, and the fortis switch. I’ll keep posting as I find more. If one suggestion catch’s your eye let me know. Also—-Samson sxs series Sxs ***EDIT*** CMT UHPR HRX fits View Quote |
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Originally Posted By NinjaZX6R:
Appreciate the assist, I'll look at them to see if they'll fit the bill. View Quote View All Quotes View All Quotes Originally Posted By NinjaZX6R:
Originally Posted By hoody2shoez:
I see your update. The new Adams arms rails would work and look fairly similar. I’m checking out the vltor freedom right now, a few seekins offerings, and the fortis switch. I’ll keep posting as I find more. If one suggestion catch’s your eye let me know. Also—-Samson sxs series Sxs ***EDIT*** CMT UHPR HRX fits |
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Both the Samson and Fortis don't have a full length rail so they're out even if they fit, the Vltor is the leading contender except they're only showing Key Mod not the M-Lok I want.
Just looked at the Adams Arms rail and it looks like it fits the bill for what I need though it's almost twice what I paid for the Stngr for the necessary .025" more clearance for the gas block😡. |
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The cmt is going to be up there in price too. I’ll try to post up a few more that I can find
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Also, check out SA Facebook and Instagram. You can see what others built with. It may be able to help narrow a few things down
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Wish DD still made the Omega piston.
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Married the most eligible woman on ARFCOM. https://www.ar15.com/forums/general/That-Every-Man-Be-Armed-Free-AR-parts-Please-contribute-your-parts-Trash-Panda-vid-Pg-15-/5-2146304/
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I recently finished a build using a Superlative Arms Piston kit with Strike Industries Strike Rail. The Superlative Arms Piston kit includes the bolt carrier.
The Superlative Arms piston kit and the Strike Industries Strike Rail are a perfect match. The rail is held on by one allen head bolt, easy on, easy off for cleaning. The Piston gas block fits in the rail without modifications. The piston fits the barrel nut gaps like they were made by the same guy. First few shots were a little over gassed. Followed the Superlative Arms directions and got it dialed in perfectly in about 10 rounds. Huge difference with the Piston set at the sweet spot. The Piston kit is either restricted or bleed off. Check out the Superlative Arms website for more information. Strike Industries website says the Strike Rail is "Not compatible with most gas piston systems". FYI works with the SA piston kit. After building 9 DI AR's it was time to try a piston. If you're looking to build something a little different or want to change an existing DI to a piston, this combination fits like a glove and works great.. www.suparms.com/collections/retrofit-piston-kits/products/copy-of-750-adjustable-piston-system-pistol-length-solid-melonited-low-pro-ar15 www.strikeindustries.com/shop/products/ar/handguard/strike-rail.html |
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Originally Posted By JohnXDm:
I recently finished a build using a Superlative Arms Piston kit with Strike Industries Strike Rail. The Superlative Arms Piston kit includes the bolt carrier. The Superlative Arms piston kit and the Strike Industries Strike Rail are a perfect match. The rail is held on by one allen head bolt, easy on, easy off for cleaning. The Piston gas block fits in the rail without modifications. The piston fits the barrel nut gaps like they were made by the same guy. First few shots were a little over gassed. Followed the Superlative Arms directions and got it dialed in perfectly in about 10 rounds. Huge difference with the Piston set at the sweet spot. The Piston kit is either restricted or bleed off. Check out the Superlative Arms website for more information. Strike Industries website says the Strike Rail is "Not compatible with most gas piston systems". FYI works with the SA piston kit. After building 9 DI AR's it was time to try a piston. If you're looking to build something a little different or want to change an existing DI to a piston, this combination fits like a glove and works great.. www.suparms.com/collections/retrofit-piston-kits/products/copy-of-750-adjustable-piston-system-pistol-length-solid-melonited-low-pro-ar15 www.strikeindustries.com/shop/products/ar/handguard/strike-rail.html View Quote |
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Smooth would have been nice, but they needed a way for a wrench to grab it. It doesn't have the tight gap tolerances of a delta ring. The nut wasn't difficult to time.
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I'm running the AA Micro (non-adjustable) system on a 12" SBR. I originally had the Ergo Grip Z Float Rail System (Spectre), which fit nicely, and is specified in the AA FAQ as a compatible rail.
But the rail is heavy, and I wanted something a little more "2019" than a quad-rail. The AA FAQ lists "Midwest Industries Gas Piston Two Piece Free Float Forearm," but it's pretty model non-specific. Some of the larger/taller MI models say "piston compatible." I locked onto the MI-21M, which is listed as "AR-15/M4 Gen2 Free Float Handguard M-LOK(TM) Compatible Mid-length." Unlike some of the other MI models, it does not say "Piston Compatible." I have essentially the same rail in KeyMod on my .22LR SBR, and it's light (7 oz) and incredible slim. Figured if it didn't fit, I'd have a spare rail for a future build. It's a two piece rail that makes use of the USGI barrel nut. Turn out, the fit is perfect. 120 rounds, 90 un-suppressed and 30 suppressed. With the Armaspec H2 Stealth Recoil Spring, the brass drops with boring consistency in a nice neat pile at 3:30. Add the Midwest Industries MI-21M to the list as working with the Micro Block. |
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"...I think I speak for all of us when I say that Obama and everyone who voted for him can fornicate themselves with an iron stick. "
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Anybody know of anything other than the Lancer that will work on the Sig 516 Gen 2? I need something for a 10 inch.
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A heads up, the Troy SOCC battlerails may fit the Adams arms systems, as well as superlative systems. It uses a mil spec barrel nut as well.
The id is listed at around 1.58 |
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Originally Posted By hoody2shoez:
A heads up, the Troy SOCC battlerails may fit the Adams arms systems, as well as superlative systems. It uses a mil spec barrel nut as well. The id is listed at around 1.58 View Quote -Phil- |
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Originally Posted By AA_Phil:
I tested the SOCC rail on the floor at SHOT, it will work with Our micro gas blocks but will fit rather close to the sides of the gas block. It will also work with our standard railed gas block, as long as the rail is shorter than the gas length (7" for carbine, 9" for mid, & 12" for rifle" -Phil- View Quote View All Quotes View All Quotes Originally Posted By AA_Phil:
Originally Posted By hoody2shoez:
A heads up, the Troy SOCC battlerails may fit the Adams arms systems, as well as superlative systems. It uses a mil spec barrel nut as well. The id is listed at around 1.58 -Phil- |
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Originally Posted By hoody2shoez:
Superlative piston systems are not 300blk compatible. I’ve heard through the grapevine that a piston system is in the works View Quote I don't see why it couldn't be made to run if you give it enough gas. I want to build a ~6" side charging bufferless upper, and if I could get a SA piston block to run, it would save me a lot of time on the mill/lathe... |
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Originally Posted By RDTCU:
The site says that, but nothing's changed in what, 2 years? I don't see why it couldn't be made to run if you give it enough gas. I want to build a ~6" side charging bufferless upper, and if I could get a SA piston block to run, it would save me a lot of time on the mill/lathe... View Quote View All Quotes View All Quotes Originally Posted By RDTCU:
Originally Posted By hoody2shoez:
Superlative piston systems are not 300blk compatible. I’ve heard through the grapevine that a piston system is in the works I don't see why it couldn't be made to run if you give it enough gas. I want to build a ~6" side charging bufferless upper, and if I could get a SA piston block to run, it would save me a lot of time on the mill/lathe... |
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Anybody try the SA Adj. Piston System(https://suparms.com/collections/retrofit-piston-kits/products/750-adjustable-piston-system-pistol-length-solid-melonited-low-pro-ar15) with a DD RIS 2 handguard?
From looking at the measurements of the gas block and handguard, it should work, but I wanted to see if anybody had first hand experience. Thanks! Chris |
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Originally Posted By cebiNg:
Anybody try the SA Adj. Piston System(https://suparms.com/collections/retrofit-piston-kits/products/750-adjustable-piston-system-pistol-length-solid-melonited-low-pro-ar15) with a DD RIS 2 handguard? From looking at the measurements of the gas block and handguard, it should work, but I wanted to see if anybody had first hand experience. Thanks! Chris View Quote An MFR should work and the slim rail may work depending on barrel profile. Do you have the piston system on hand? If it’s the clamp on then Another option would be to take the gas block to your LGS and slide it on a MK18 (over the muzzle device and all) to see if it fits. Pictures and follow up would be appreciated if you try any of this. Thanks |
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Originally Posted By hoody2shoez: I think the only chance that would have of fitting would be with a barrel diameter of .625 with set screws. DD RIS II is a very slim quad rail. I have a .750 with the clamp on with a MCMR and it is TIGHT. An MFR should work and the slim rail may work depending on barrel profile. Do you have the piston system on hand? If it’s the clamp on then Another option would be to take the gas block to your LGS and slide it on a MK18 (over the muzzle device and all) to see if it fits. Pictures and follow up would be appreciated if you try any of this. Thanks View Quote Chris |
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Originally Posted By ScottS:
Just finished my latest build using a Superlative Arms piston kit. I've always liked the UTG Pro Super Slim line of handguards, but they're not kidding on the "super slim" part. But the SA kit slides right under. The installation was easy, and took far less time than I anticipated. Excuse the messy bench. http://i64.tinypic.com/whe4vl.jpg http://i63.tinypic.com/2hr0ef7.jpg Took it out today, and it ran like a top. 4 turns open on the gas block and all the rounds were dropping in the same pile at 4:00. http://i66.tinypic.com/2q86bug.jpg Now I need to move it over to an FDE lower and finish up my all-FDE piston gun. TL;DR The SA Piston Kit fits nicely under the UTG PRO Super Slim rail. View Quote |
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"...I think I speak for all of us when I say that Obama and everyone who voted for him can fornicate themselves with an iron stick. "
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Thanks for that update. My iPhone didn’t want to focus when I took pictures of the mcmr fit. Tight fit but it works!
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Originally Posted By ScottS:
Woof. That's a hard picture to get with a shitty iPhone. I couldn't ge it to focus straight on, so it's a little off to the left (shooter's right) side. http://i67.tinypic.com/dvhttv.jpg I'm using a pencil barrel, with a .625 gas shoulder, so it's the .625 gas block. View Quote |
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Originally Posted By NinjaZX6R: So the question is, will the .750 gas block that most of us use fit? View Quote ***EDIT*** after looking at the utg diagram and the bcm diagram I am about 90% sure it would fit. |
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Originally Posted By hoody2shoez: It will be tight but I believe the set screw will fit. I am unsure of the clamp on. Looking at the specs I believe it would, but I am not 100% confident. ***EDIT*** after looking at the utg diagram and the bcm diagram I am about 90% sure it would fit. View Quote |
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