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The Luth-AR MBA-1 is a fixed buttstock built for large-frame AR builds chambered in .308 and 7.62, and it mounts to a standard rifle-length A2 buffer tube. What sets it apart is how much you can tune it. The cheek rest raises up to a full inch and slides fore and aft, so you can lock in a consistent cheek weld even when you are running a taller optic or magnified scope. Length of pull opens up with the adjustable buttplate for a bit over an inch of extra reach, all handled through a thumbscrew that needs no tools once you know where you want it.
The whole thing is molded from glass-filled nylon, which keeps it tough without adding bulk. It tips the scale right around 1.26 pounds for the stock itself, roughly half the weight of many precision stocks in its class, which matters a lot on a big-bore AR that is already carrying some heft up front. That light weight and low profile keep your rifle balanced instead of tail-heavy.
This is a complete assembly kit, not just the shell. It includes the MBA-1 stock, the .308/7.62 A2 buffer extension tube, a rifle recoil buffer, and the matching recoil spring, so you can bolt it onto a compatible AR-10 lower without hunting down extra parts. It is fully ambidextrous too. The cheek piece comes set up for right-handed use out of the box and moves to the other side for lefties, which makes it a genuine option no matter which shoulder you shoulder from.
Installation is straightforward and most folks have it done in minutes with a basic Allen wrench. One tip from the field: this stock needs a rifle-length A2 tube, not a carbine or standard AR-15 tube, so make sure your buffer setup matches before you order. It is a smart pick for DMR-style rigs, long-range gas guns, hunting builds, and anyone who wants real adjustability without stepping up to a heavy precision chassis.
It is built for a rifle-length A2 buffer tube, and the kit already includes one along with the buffer and spring. It will not fit a carbine or standard six-position AR-15 tube. If your lower is set up for a carbine buffer system, look at the collapsible MBA-3 or MBA-4 instead.
Yes, it is fully ambidextrous. The cheek piece ships pre-installed for right-handed use, but it unbolts and moves to the opposite side for lefties. You can shoulder it comfortably off either side once it is set up the way you like.
It does. This .308/7.62 kit works well on 6.5 Creedmoor LR-308 pattern builds since they share the same large-frame buffer setup. It is a popular choice for gas-gun precision and DMR-style rifles in those calibers.
The cheek rest raises up to a full inch and also slides forward and back on the stock. That combination lets you build a solid, repeatable cheek weld, which is especially helpful when you are running a raised or magnified optic and want your eye lined up perfectly behind the glass.
| UPC | 859992007319 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MBA-1K308 |
| Color | Black |
| Model | |
| Product Type | Mil-Spec |
| Style | Adjustable |
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