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This Luth-AR Commercial Carbine Buffer Assembly Package pulls together the whole back end of your AR-15 recoil system in one box, so you're not chasing down five separate small parts to finish a lower. It's built for the AR-15 platform chambered in .223 Remington and 5.56x45mm, and everything in the kit is matched to work together right out of the package. If you're wrapping up a fresh build or refreshing a rifle that's seen some rounds, this takes the guesswork out of it.
The heart of the kit is a machined commercial-spec buffer tube cut from 6061-T6 aluminum with a black anodized finish and six positions for length-of-pull adjustment. That commercial sizing is the key detail: the stock-end diameter runs slightly larger than mil-spec, right around 1.17 inches, with the sloped rear profile that commercial-fit stocks are designed to cam down onto. If your buttstock is a commercial size, this is the tube that matches it.
Along with the tube you get a buffer spring, a 3.2 ounce carbine buffer, an end plate, and a castle nut. The spring and buffer weight are dialed in specifically for .223 and 5.56, which keeps your bolt carrier cycling the way it should without over- or under-gassing the action. It threads straight into a standard AR-15 lower, and most builders have it installed with basic tools in a few minutes.
Luth-AR was founded by Randy Luth, the same name behind DPMS and Panther Arms, and the company has built a reputation for AR-15 and .308 components that just work. This kit is assembled and made in the USA, which is a nice touch when you're putting your trust in the part that manages recoil on every shot. If you're building on a commercial-spec lower or already running a commercial stock, this package keeps the whole system consistent from receiver to buttpad.
The main difference is the outer diameter at the stock end of the tube. This commercial buffer assembly runs about 1.17 inches with a sloped rear profile, while mil-spec tubes are roughly 0.02 inches smaller with a straight rear face. That small gap means your stock has to match the tube, so grab this commercial kit if your buttstock is commercial size.
It depends on whether your stock is built for commercial or mil-spec sizing. Commercial stocks are made to cam down onto the larger, tapered commercial tube, so a commercial-fit stock will seat properly here. If you're running a mil-spec stock like most Magpul or B5 offerings, you'll want the mil-spec version of this kit instead.
Yes, this package covers the full recoil system: the buffer tube, spring, carbine buffer, end plate, and castle nut. It threads directly into a standard AR-15 lower receiver, so you just add your stock and you're set. Most builders have it installed with basic tools in a few minutes.
It is. The spring and the 3.2 ounce carbine buffer are matched specifically for .223 Remington and 5.56x45mm, which helps the bolt carrier cycle reliably. It is not intended for .308 or 7.62 builds, which use different buffer components.
| UPC | 859819007089 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 223-C-BAP |
| Style | Commercial |
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