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The Luth-AR BAP-308 is a straightforward, no-frills buffer assembly designed for builders working on AR-10 and .308 AR platforms. It comes as a complete kit with all the internal components you need to finish the rear of your lower receiver, so you're not hunting around for individual parts that may or may not play nice together.
Rifle-length buffer systems deliver softer recoil impulse compared to carbine setups, which makes a tangible difference when you're behind the gun. If you're building a precision rifle or just want less felt recoil, this is the direction to go. The longer spring and standard weight buffer work together to manage the larger cartridge's energy more smoothly.
Luth-AR manufactures this assembly from 6061-T6 aluminum with a hardcoat anodized black finish. That means you get durable corrosion resistance and wear protection without the weight penalty. The buffer body comes in at 5.3 ounces, which is the standard weight for rifle-length .308 systems. Customers consistently report clean installations with zero fitment issues and appreciate the textured anodized finish as a step up from typical matte surfaces.
This assembly includes the buttstock extension tube sized for A2-style fixed buttstocks, a standard .308 buffer spring, and the buffer body assembly. It's made in the USA and comes ready to go into your build without surprises. The A2-compatible design means you can pair it with most common fixed rifle stocks, or use it as a replacement if you're refreshing an existing platform.
The BAP-308 is designed for A2-style fixed buttstocks, not adjustable stocks. If you want to use an adjustable stock, you'll need a carbine-length buffer system instead. The fixed rifle-length design is optimized for precision and solid builds.
No, mixing a rifle-length buffer system with a carbine-length gas tube can cause reliability issues. Make sure your upper receiver is configured for rifle-length gas before installing this assembly. The gas system and buffer system need to match for proper function.
The kit includes the buttstock extension tube, the buffer spring, and the buffer body. You do not get the fixed stock itself or any tools, but everything else needed for the recoil system is in the box. You will still need the lower receiver and castle nut to complete assembly.
Yes, this assembly is designed to work with standard AR-10 and .308 AR platforms using A2-style receivers and rifle-length gas systems. The tube threads follow standard dimensions, so it's compatible with most quality AR-10 lower receivers and uppers configured for rifle-length operation.
| UPC | 859819007256 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BAP-308 |
| Product Type | Buffer Tube Complete Assembly |
| Style | Assembly |
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