High-grade durable rubber butt cap.
Rod Building - Butt Cap Removal Suggestions
Canto Arms Receiver End Cap with QD Socket - Canto Arms
Colt® AR-15 Buttstock Assembly Schematic - Brownells UK
Wilson Buttcap on Yonex DR 98: Works just fine.
PVC pipe end caps are circular PVC fittings that are used as part of a PVC Insulation Jacketing System to cover exposed butt ends of a pipe. These end
End Cap PVC Fitting Cover
Colt® AR-15 Buttstock Assembly Schematic - Brownells UK
PVC pipe end caps are circular PVC fittings that are used as part of a PVC Insulation Jacketing System to cover exposed butt ends of a pipe. These end
End Cap PVC Fitting Cover
CMMG AR-15 .22LR End Cap Up to $1.23 Off Free Shipping over $49!
KE Arms - End Cap Full Size AR Tube #1-54-01-003
Butt cap options, Rod Building and Tackle Tinkering