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The Luth-AR BS-11 is a rifle-length buffer body designed specifically for AR-15 platforms chambered in .223 Remington or 5.56 NATO. With a measured weight of 5.1 ounces, this buffer sits in the heavy category that works best with A2 fixed stocks and rifle-length systems. The five internal steel weights are engineered to manage recoil impulse while helping your bolt carrier group move at the right speed through the cycle.
This buffer is built to pair with rifle-length buffer tubes and rifle recoil springs, making it the correct choice if you're running an A2 fixed buttstock setup. The heavier weight of a rifle-length buffer compared to carbine-length alternatives means you'll get more resistance in the system, which translates to softer felt recoil and reduced wear on your receiver extension over time. It's one piece of a larger tuning puzzle that includes your gas system and spring choice.
Luth-AR has been building AR components for decades under the leadership of Randy Luth, who founded and formerly owned DPMS Panther Arms. That experience shows in their manufacturing standards. Every BS-11 comes as a replacement or service part, so it fits standard AR-15 lower receiver extensions built for rifle-length systems. If you're building a fresh rifle or swapping out a worn buffer in an existing rifle platform, this part is ready to drop in.
The BS-11 is a rifle-length buffer weighing 5.1 ounces, designed for A2 fixed stocks and rifle-length buffer tubes. Carbine buffers are lighter (around 3 oz) and shorter, designed for collapsible stocks and carbine tubes. You cannot mix them up; the BS-11 only works with rifle-length systems.
No. The BS-11 is purpose-built for rifle-length gas systems paired with A2 fixed stocks. Using it on a carbine or mid-length setup can affect function and cycle reliability. Stick with carbine-length buffers for those configurations.
Yes, it works with any standard rifle-length buffer tube and rifle recoil spring found on AR-15s with A2 stocks. This makes it a direct-fit replacement if you need to swap out a worn buffer or are building a new rifle with a rifle-length system.
A heavier buffer like the BS-11 slows down the bolt carrier group's rearward movement, resulting in softer felt recoil, less muzzle rise, reduced wear on parts, and better brass condition. This makes the gun easier to control and more pleasant to shoot, especially with quality ammo.
| UPC | 859819007164 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BS-11 |
| Product Type | Buffer |
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