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Getting the recoil system right is one of those things that makes or breaks a .308 AR-10 build, and this Luth-AR kit takes the guesswork out of it. You get everything you need to run a Mil-Spec carbine buffer setup in one box, whether you're starting a fresh build or swapping over from another configuration. It's a straightforward, no-nonsense assembly from a company that knows the AR platform inside and out.
The assembly bundles a Mil-Spec diameter carbine buffer tube, a dedicated .308/7.62 carbine buffer weighing 3.8 oz, the matching recoil spring, a receiver end plate (latch plate), and a castle nut (lock ring). That's the full package to get your lower squared away without hunting down individual pieces. The .308-specific spring and buffer are tuned for the extra energy of the 7.62 cartridge, which is what sets this apart from a standard AR-15 carbine kit.
Luth-AR machines the tube from 6061-T6 aluminum and finishes it with a hardcoat anodized coating, so it holds up to wear and shrugs off corrosion over the long haul. The Mil-Spec diameter matters here because it opens the door to the widest range of collapsible stocks on the market, including Luth-AR's own MBA-3 and MBA-4 buttstocks. Builders who've run these report clean installs and solid fitment on billet and forged LR-308 style lowers alike.
Luth-AR was founded by Randy Luth, a longtime figure in the AR world, and the company has a reputation for dependable, American-made components. One thing worth knowing: a carbine buffer system is designed to pair with a carbine-length gas system, so match your gas setup accordingly for smooth, reliable cycling. Do that, and this kit gives you a proven foundation for your AR-10.
Yes, it's built specifically for .308/7.62 AR-10 style platforms and uses a standard Mil-Spec diameter tube. Builders regularly report clean, trouble-free installs on both billet and forged LR-308 style lowers. As long as your lower is cut for a standard AR-10 buffer system, you're good to go.
Because the tube is Mil-Spec diameter, it accepts the broad range of collapsible stocks made for that spec, including Luth-AR's own MBA-3 and MBA-4 buttstocks. Mil-Spec tubes are slightly smaller in diameter than commercial ones, so double-check that any stock you're pairing is a Mil-Spec fit. That diameter is generally the more common option in the aftermarket.
It's designed for a carbine-length gas system, and that's the pairing that gives you the most reliable cycling. Running a carbine buffer setup with a rifle-length gas system can lead to timing and reliability issues. Match your buffer system length to your gas system for the smoothest function.
It is. The included buffer comes in at 3.8 oz and the recoil spring is spec'd for the 7.62 cartridge, so the system is set up to handle the extra energy of .308 rather than a lighter 5.56 load. That's what makes it a proper match for an AR-10 build straight out of the box.
| UPC | 859819007249 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 308-M-BAP |
| Product Type | Buffer Tube Complete Assembly |
| Style | Mil-Spec |
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