The Kaw Valley Precision Mil-Spec 6-Position Buffer Tube (Kaw Valley Precision part no. KVPBT6P) is a standard mil-spec diameter receiver extension built to accept collapsible AR15 stocks across six adjustable length-of-pull positions. Because it holds to mil-spec outer diameter tolerances, it’s compatible with the widest range of aftermarket collapsible stocks on the market, unlike commercial-spec tubes which use a slightly larger diameter. Kaw Valley Precision machines the tube with the standard six position stops and castle nut threading needed for a complete AR15 lower build. It’s a straightforward, budget-friendly buffer tube for anyone building or upgrading an AR15 lower receiver.

Key Specifications

• Built to mil-spec diameter, compatible with the widest range of collapsible AR15 stocks.
• Adjusts across 6 positions for length-of-pull customization.
• Threaded to accept a standard castle nut and end plate.
• Threaded to accept a standard castle nut and end plate.
• Sold as a standalone buffer tube, not a complete buffer system kit.

Frequently Asked Questions

What’s the difference between mil-spec and commercial-spec buffer tubes? Mil-spec tubes use a slightly smaller outer diameter than commercial-spec tubes, and most aftermarket collapsible stocks are built for the mil-spec size.

Does this buffer tube include the castle nut and end plate? Confirm current listing contents before ordering; buffer tubes are commonly sold separately from the castle nut and end plate.

Buy the Kaw Valley Precision Mil-Spec 6-Position Buffer Tube

Shop the Kaw Valley Precision buffer tube in our AR gas system selection, with fast, insured shipping from our Lubbock, Texas gun shop.