The TacFire AR-10 Carbine Buffer Tube Kit with Ambi Dual Loop Sling Adapter (brand part no. MAR047-308-B) finishes out a .308 AR-10 build while adding ambidextrous sling mounting at the receiver end. The kit includes a mil-spec 6-position buffer tube, a 3.8 oz. buffer matched to .308-length cycling, and a dedicated .308 buffer spring. In place of a standard end plate, this kit ships with a dual-loop end plate that gives left- and right-handed shooters a sling attachment point on either side, plus a castle nut to lock it all in place.

Key Specifications

• Built around a mil-spec 6-position buffer tube sized for AR-10/.308 receivers.
• Includes a 3.8 oz. buffer matched for proper .308-length cycling.
• Ships with a dedicated .308 buffer spring.
• Uses a dual-loop end plate for ambidextrous sling mounting.
• Comes with a castle nut to secure the buffer tube in place.

Frequently Asked Questions

What does the dual-loop end plate do? It adds a sling attachment loop on both sides of the receiver for ambidextrous mounting.

Is this kit sized for .308 AR-10 builds? Yes, the buffer and spring are matched for AR-10/.308 cycling.

Buy the TacFire AR-10 Buffer Tube Kit with Ambi Sling Adapter

Finish your AR-10 build with ambidextrous sling mounting built in. Get the TacFire AR-10 Buffer Tube Kit from our Lubbock, Texas gun shop for fast, reliable shipping — or browse more AR-10 accessories and parts.