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There's a reason the UBR earned a reputation as one of the toughest stocks Magpul ever built, and the Gen2 sharpens that formula. The Magpul UBR Gen2 delivers the rock-solid lockup you'd expect from a fixed stock, but with a length of pull that adjusts to your body armor, layering, or shooting position. The standout trick is the fixed cheek piece, which stays put while the rest of the stock collapses, so your cheek weld feels identical whether the stock is fully extended or tucked all the way in. That consistency behind an optic pays off every time you shoulder the rifle.
Magpul redesigned this generation to trim weight without giving up strength. The Gen2 runs nearly five ounces lighter than the original UBR while keeping the same reputation for durability. It uses an enhanced locking mechanism with dual locking pawls for maximum drop strength and shock resistance, plus multi-shell construction that shields the internal operating parts from impact and penetration. The single adjustment lever only needs gross motor movement to work, so you can change positions fast even with gloves on, and the whole profile stays slim and anti-snag.
This stock fits AR-15/M4 and AR-10/SR25 platforms and comes with its own custom receiver extension tube, buffer spacer, and mounting hardware. It works with carbine, A5, and SR-25 length buffer systems, giving you room to tune your rifle's cycling. Keep in mind you'll still need to supply the correct buffer and spring for your setup. With seven adjustments plus the fully collapsed position, you get eight total length-of-pull settings across a 3.5 inch range.
The UBR Gen2 comes loaded with the details that matter in the field. Front and rear QD sling points and two footman's loops give you plenty of mounting options, and the MOE SL angled-toe rubber butt-pad grips your shoulder while easing transitions. The removable, reversible storage compartment in the tail holds batteries, a bolt, or small spares. It's made in the USA and built for hard use.
Yes, the UBR Gen2 includes its own custom receiver extension tube, buffer spacer, and all the mounting hardware you need to install it. What it does not include is the buffer and spring itself. You'll need to provide a carbine buffer and spring, an SR-25 length buffer and spring, or an A5 buffer and spring depending on how you're setting up your rifle.
It fits AR-15/M4 and AR-10/SR25 platforms, which makes it a flexible option across small and large frame builds. The stock is compatible with carbine, A5, and SR-25 length buffer systems, so you can dial in the right combination for your caliber and cycling needs. Just match the correct buffer and spring to your platform.
The biggest change is weight. The Gen2 runs nearly five ounces lighter than the original while keeping the same rugged reputation. Magpul also updated the locking mechanism with dual locking pawls for better drop strength and shock resistance, and refined the overall profile to stay slim and snag-free.
Yes, that's the whole idea behind the design. The cheek piece stays fixed while the length of pull collapses and extends, so your face lands in the same spot behind the optic every time. Across all eight positions, that means your sight picture stays repeatable no matter how you adjust the stock.
| UPC | 840815100775 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MAG482-BLK |
| Color | Black |
| Model | |
| Product Type | A5 Length |
| Shipping Weight | 1.775 |
| Style | Collapsible |
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