The CMC AR-15 carbine buffer tube kit (brand part no. 81626) is a mil-spec, six-position kit from CMC Triggers with the parts needed to mount a stock assembly onto your lower receiver. The tube is machined from 6061-T6 aluminum and anodized, with a drainage hole that removes water from the system, and the kit is now manufactured and assembled in-house in Fort Worth, Texas. It pairs with any mil-spec AR-15 stock.

Key Specifications

• The kit is compatible with mil-spec AR-15 stocks.
• The tube is a six-position, mil-spec carbine buffer tube.
• The tube is machined from 6061-T6 aluminum.
• The finish is a MIL-A-8625 Type II, Class 2 anodized coating.
• A precise drainage hole removes water from the system in marine environments.
• The kit includes a 3 oz carbine recoil buffer.
• The kit includes a high-quality recoil spring made from high-tensile steel.
• The castle nut is made from high-carbon steel.
• The kit includes a quick-detach receiver end plate.
• It is made in the USA, manufactured and assembled in Fort Worth, Texas.

Frequently Asked Questions

What comes in this kit? The kit includes the six-position mil-spec buffer tube, a 3 oz carbine recoil buffer, a recoil spring, a castle nut and a quick-detach receiver end plate.

What stocks does it work with? CMC lists the kit as compatible with mil-spec AR-15 stocks.

Why does the tube have a drainage hole? The drainage hole removes water from the system in marine environments instead of letting it pool inside.

Buy the CMC AR-15 Mil-Spec Carbine Buffer Tube Kit

Get the tube, buffer, spring, castle nut and end plate in one kit. See more AR buffer system parts and order from our Lubbock, Texas gun shop for fast, insured shipping.