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The Luth-AR 308-BS-11 is the workhorse buffer that keeps a .308 AR running smooth. Built for AR-10 and LR308 pattern rifles running A1 or A2 length receiver extensions, it drops right into your rifle length tube and gets to work managing the extra punch a 7.62 round brings to the party. At 5.35 ounces, it's tuned specifically for the heavier bolt carrier and stouter recoil impulse you get out of a .308 platform.
Inside the aluminum body you'll find tungsten weights and a rubber bumper at the tail. That combination does two things well: it soaks up the sharp rearward impulse of a full-power rifle round, and it dampens the metal-on-metal slap you'd otherwise feel and hear at the back of the action. The result is a rifle that feels a little softer on the shoulder and cycles more consistently round after round. It's a straightforward, proven design from a company that knows the .308 platform inside and out.
Fitment is the one thing worth double checking before you order. This buffer is made for rifle length A1/A2 extension tubes only, so it will not work in a carbine or six-position collapsible tube. It's also strictly a .308/7.62 part, not something you'd run in an AR-15. If you're building or repairing an AR-10, LR308, or a similar pattern clone with a fixed rifle stock, this is the right piece. Pair it with a matching .308 rifle buffer spring and you've got the heart of a reliable recoil system.
Luth-AR was founded by Randy Luth, who previously built DPMS Panther Arms and has been a fixture in the modern sporting rifle world for decades. That experience shows up in parts like this one, made in America and designed to do a single job dependably. Whether you're finishing a fresh build or swapping out a worn buffer, the 308-BS-11 is an easy, no-drama upgrade.
No. This is a rifle length A2 buffer and needs a full A1 or A2 length extension tube to function properly. It will not fit or work in a carbine or six-position collapsible tube, so make sure your rifle is set up with a fixed rifle length tube before ordering.
This buffer is built specifically for .308 and 7.62 rifles like the AR-10 and LR308. It is not designed for AR-15 platforms, since the weight and dimensions are tuned for the heavier .308 recoil impulse. Stick with an AR-15 rifle buffer for your 5.56 builds.
The tungsten weights inside the aluminum body add mass in a compact package, which helps slow and control the bolt carrier as it travels rearward. On a hard-hitting round like the .308, that translates to softer felt recoil and smoother, more consistent cycling. The rubber bumper on the end also cuts down on the harsh slap at the back of the action.
Yes. It's designed to work in AR-10, LR308, and similar pattern .308 rifles running A1/A2 length receiver extensions. As long as your lower and tube follow the standard rifle length setup, this buffer drops right in.
| UPC | 859819007287 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 308-BS-11 |
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