Machined 4140 chrome moly steel barrel extensions help the custom rifle builder ensure a secure barrel fit for best alignment and accuracy.

Features

• Heat treated for surface hardness to give years of reliable service.
• Available for M4 carbine extension with feed ramp cuts.
• AR-Style .308 extension fits the DPMS LR-308 and other .308s with the same thread pattern, plus it offers M4-style feed ramp cuts to ensure extra reliability in getting rounds from the magazine to the chamber.
• All models have pre-drilled locator pin hole and pin is included.