WMD Guns Barrel Extension .308 NiB-X Stainless Steel

WMD Guns Barrel Extension .308 NiB-X Stainless Steel. Feed ramps are 45 degrees and polished to assist feeding. M4-type barrel extension has NiB-X finish that aids in smooth locking and unlocking with the bolt consistent feeding and helps prevent hang-ups. This high-tech coating lasts the life of the weapon and wont rub off flake off or gall. Helps dissipate heat for cooler operation too. Precision machined from 8620 steel to USGI specifications with integral M4-type feed ramps and predrilled lo