The Advanced Technology Commercial Buffer Tube Assembly (brand part number A5101050) gives an AR-15 or AR-10 .308 builder a complete, ready-to-install buffer tube package rather than a bare tube requiring separate parts. ATI machines the 6-position tube from hard-coat anodized 6061-T6 aluminum with a slanted back for a cleaner stock interface, and sizes it to commercial thread and 1.17-inch tube diameter specs so it fits most commercial-pattern collapsible stocks. The assembly ships complete with an AR-15 recoil plug, buffer spring, and a steel castle nut and locking ring, so there’s no separate parts list to track down before mounting a stock. Made in the USA, it’s a straightforward, one-box way to finish out a commercial-spec lower build.

Key Specifications

• Fits most AR-15 and AR variants.
• Also compatible with AR-10 .308 models.
• Built as a 6-position adjustable tube.
• Machined from hard-coat anodized 6061-T6 aluminum.
• Sized to commercial thread and 1.17-inch tube diameter specs.
• Includes a recoil plug, buffer spring, castle nut, and locking ring.
• Manufactured in the USA.

Frequently Asked Questions

Does this include the castle nut and spring? Yes, it ships complete with a recoil plug, buffer spring, castle nut, and locking ring.

Will this fit an AR-10? Yes, it’s compatible with AR-10 .308 models in addition to AR-15/AR variants.

Buy the Advanced Technology Commercial Buffer Tube Assembly – AR-15, Black Anodized 6061-T6 Aluminum

Finish your commercial-spec lower build with one complete kit instead of a parts hunt. Order it from our Advanced Technology lineup, part of our rifle stocks selection, at our Lubbock, Texas gun shop for fast, direct shipping.