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The Luth-AR BAP-1 takes the headache out of finishing a rifle-length AR-15. Instead of hunting down a tube here, a spring there, and hoping the buffer weight is right, you get all three matched components in a single package built to work together. It's aimed squarely at folks running a fixed A2 stock, whether you're starting a fresh .223/5.56 build or moving a carbine over to a traditional rifle-length recoil system.
Inside the box you'll find an A2 rifle buttstock extension tube, a standard .223 rifle recoil spring, and a standard rifle buffer body assembly weighing in around 5.1 ounces. The extension tube is machined from 6061-T6 aluminum and wears a hardcoat anodized black finish that holds up well to range time and long-term storage. The whole thing threads onto a standard mil-spec lower and pairs with A1 and A2 style fixed stocks.
The rifle-length system runs on a longer tube and a heavier, longer buffer than a carbine setup. That extra travel spreads the recoil impulse out over a greater distance, which smooths out felt recoil and gives you that classic, mellow rifle cycle. It's a big part of why traditional and retro-style builds, like M16A1 clones, lean on this layout. Keep in mind that rifle-length buffers and carbine buffers are not interchangeable, so this kit belongs in a fixed-stock A2 build, not a collapsible carbine.
Installation is simple for anyone comfortable with basic AR wrenching. The assembly seats on the back of a mil-spec receiver and plays nicely with standard A2 fixed buttstocks. If you're converting a carbine, remember that a proper rifle-length build usually means matching your barrel and gas system to the setup as well. Builders have reported clean fitment on everything from Spikes lowers to retro clones, and it's a popular base for pairing with A2 or modular stock options.
The BAP-1 includes three matched components: the A2 rifle-length extension tube, a standard .223 rifle recoil spring, and a standard rifle buffer. That's everything on the recoil side you need to finish a fixed-stock AR-15. You'll still supply your own A2 stock and the mounting hardware for it.
No. This is a rifle-length A2 setup, and the tube is too long to accept an adjustable carbine stock. Rifle and carbine buffer systems are not interchangeable, so you'll want this only for fixed A1 or A2 buttstock builds.
The BAP-1 is built around a rifle-length recoil system, so it's best matched to a rifle-length gas system and barrel for consistent cycling. If you're converting a carbine, plan on swapping over to a rifle-length barrel and gas tube as well. Getting the whole system to match keeps things running smoothly.
Yes, the assembly threads onto a standard mil-spec AR-15 lower and installs like any other rifle-length setup. Builders have reported clean fitment on common lowers and retro-style clone builds. If you're comfortable with basic AR assembly, this one goes together quickly.
| UPC | 859819007102 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BAP-1 |
| Product Type | Buffer Tube Complete Assembly |
| Style | A2 |
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