The Forward Controls Design Receiver Extension (Forward Controls Design part no. REF) is a rifle-length buffer tube built for fixed-stock AR-15 and M4-pattern rifles. Forward Controls Design machines the extension to mil-spec dimensions, so it threads into a standard AR-15 lower receiver and accepts a mil-spec buffer and spring without special fitting. The rifle-length style gives a longer sight radius and the traditional A2-style fixed-stock feel that many shooters prefer for precision and service-rifle-style builds. It is a genuine, precision-machined receiver extension for anyone building or restoring a fixed-stock AR-15 or M4-pattern rifle.

Key Specifications

• Built in the rifle-length style.
• Fits AR-15 and M4-pattern rifles.
• Machined to mil-spec dimensions.
• Accepts a mil-spec buffer and spring.

Frequently Asked Questions

What style stock does this extension fit? Fixed-stock, rifle-length AR-15 and M4-pattern builds.

Is this a mil-spec extension? Yes, it is machined to mil-spec dimensions for standard buffers and springs.

Buy the Forward Controls Design AR-15/M4 Receiver Extension

Build or restore a fixed-stock AR-15 or M4-pattern rifle with a genuine mil-spec receiver extension. See more from Forward Controls Design or shop our full rifle parts selection. Order it from our Lubbock, Texas gun shop for fast, insured shipping.