Commonly Purchased with Nut, Receiver Extension, M4
Lower Parts Kit, AR15
Starting at
$69.95
Spring, Action, Carbine, AR15
Starting at
$5.95
Lower Parts Kit, AR15, Gunbuilder's Kit
Starting at
$39.95
Fastback Receiver Extension, Mil-Spec
Starting at
$59.95
Receiver Extension, M4
Starting at
$39.95
Receiver End Plate, M4
Starting at
$5.95
Receiver End Plate, Ambi Single Point
Starting at
$7.95
Buffer Assembly, Carbine, AR15
Starting at
$21.95
Buffer Assembly, H2
Starting at
$49.95
ZEROED Lower Parts Kit, AR15, Gunbuilder's Kit
Starting at
$89.95
Nut, Receiver Extension, M4
M4 / AR Castle Nut, Receiver Extension (Buffer Tube) castle nut. Matte black finish.
Specifications
| Platform | Mk4 |