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Every part checked against this replica, grouped by category. The tag on each row says how well the answer is backed. Use the evidence filter to see only fits a maker or retailer has named.

CNC 6-Position Buffer Tube for GHK / WE / VFC M4 GBBRFitsRetailer
Angry Gun

Heavy Recoil Buffer for M4 / AR-15 / 416 GBBRFitsRetailer
VFC

SLR M4 GBB Buffer Tube AssemblyFitsRetailer
Dytac
Not compatible with Tokyo Marui MWS.

Stainless Recoil Kit for VFC M4 GBBRFitsRetailer
BBT