The Spike’s Tactical Carbine Buffer Assembly Kit (brand part no. SLA500R-K) finishes off an AR-15 lower with quality mil-spec components in one package. Spike’s Tactical built this kit for builders who already have their own stock picked out, or who want to use a stock that is not sold directly by Spike’s Tactical, since it includes everything needed to complete the buffer system without locking the builder into a specific stock. The kit includes a 6-position mil-spec diameter buffer tube, an ST-T2 heavy carbine buffer, a carbine buffer spring, a receiver end plate, and a castle nut. It is a straightforward way to finish a lower build with parts that are all matched to work together.

Key Specifications

• Includes a 6-position mil-spec diameter buffer tube compatible with standard collapsible stocks.
• Ships with the ST-T2 heavy carbine buffer for reliable cycling.
• Includes a matched carbine buffer spring.
• Comes complete with a receiver end plate and castle nut for a finished lower build.

Frequently Asked Questions

Does this kit include a stock? No, it is built for builders who already have their own stock or want to choose one separately.

What buffer tube diameter does it use? A 6-position mil-spec diameter buffer tube.

What is included besides the buffer tube? The ST-T2 heavy carbine buffer, a carbine buffer spring, a receiver end plate, and a castle nut.

Buy the Spike’s Tactical Carbine Buffer Tube Assembly

Order this Spike’s Tactical buffer tube assembly from Spike’s Tactical through our rifle stocks lineup. Our Lubbock, Texas team ships it direct and fully insured as soon as it’s ready to go.