2a Bldr Series Ar10 Buff Tube Assy

The 2A Builder Series AR10 Buffer Tube Assembly is a precision-machined component engineered for AR-10 platform rifles requiring tight tolerances and reliable recoil management. Manufactured in-house by 2A Armament and finished with hard anodizing, this assembly delivers the concentricity control demanded by operators building or upgrading precision rifle systems where bolt carrier binding and performance drift cannot be tolerated.

Billet machined from 6061-T651 aluminum rather than forged or impact-extruded, this buffer tube achieves tighter dimensional accuracy that reduces potential for carrier binding and ensures consistent cycling across extended firing strings. The hard-anodized finish provides corrosion resistance essential for field duty, training, and long-term storage. The assembly arrives complete with a 2A End Plate and 2A Castle Nut, allowing users to immediately integrate the tube into their upper receiver group without sourcing additional components. Weighing 0.44 lbs, it maintains the weight characteristics expected in quality AR-10 buffer systems without sacrificing structural integrity.

This assembly is purpose-built for shooters assembling or maintaining AR-10 rifles for long-range training, precision shooting, competitive events, or duty applications where consistent bolt carrier function directly impacts accuracy and reliability. The emphasis on concentricity and manufacturing precision appeals to builders who refuse tolerance stack-up in critical systems. End-users upgrading from standard forged tube assemblies often report smoother cycling and tighter grouping once carrier binding is eliminated through proper dimensioning.

The Builder Series represents 2A Armament's commitment to in-house manufacturing quality and dimensional control. For AR-10 builds where component selection directly affects performance, this buffer tube assembly delivers verified precision without guesswork or compromise.