Quote History Originally Posted By themissinglink:
M203 Adapter for M5 RAS
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Yep.
It's officially called a
barrel stop and it is required to mount a standard (barrel mounted) M203 under the M5 RAS.
I think KAC only includes them in the box of an M5 RAS intended for sale/shipment to a military.
It needs to be in place before the top section of the M5 is installed (if it's going to be utilized).
Nomenclature: Barrel Stop
KAC P/N: 97162
NSN: 1005-01-453-4224
US Army P/N: 12973139
The DOD pays about $29 apiece for them, but you could easily get over $50 if you sell it because they're hard to find.