Magpul UBR Gen 2 Adjustable Stock AR-15/M4 Black
Magpul Industries
$189.95
(No reviews yet)
Write a Review
Magpul Industries
Magpul UBR Gen 2 Adjustable Stock AR-15/M4 Black
The Magpul UBR Gen 2 Adjustable Stock redefines what a collapsible AR-15/M4 stock can be, delivering the rock-solid stability of a fixed stock with the versatility of eight adjustable length-of-pull positions.
- Eight adjustable positions with a fixed cheek piece for consistent cheek weld
- Compatible with Carbine, A5, and SR-25 length buffer tube systems
- Nearly five ounces lighter than the original UBR without sacrificing durability
- Reinforced polymer construction engineered to handle large-bore AR calibers
- Integrated front and rear QD sling attachment points plus two footman's loops
- Includes ergonomic MOE SL angled-toe rubber butt-pad and customizable storage compartment
Who This Is For
The Magpul UBR Gen 2 is the ideal choice for serious AR-15 and AR-10 shooters who demand fixed-stock rigidity without giving up length-of-pull adjustability — whether you're a competitive shooter, a duty professional, or a precision-minded enthusiast who refuses to compromise between comfort and performance. It's especially well-suited for those running larger calibers or high-recoil builds who need a stock that won't flex or rattle under stress.
Specifications
| Brand | Magpul Industries |
|---|---|
| Model | UBR Gen 2 |
| Color | Black |
| Compatible Platforms | AR-15/M4, AR-10/SR-25 |
| Buffer Compatibility | Carbine, A5, SR-25 length systems |
| Adjustment Positions | 8 |
| Cheek Piece | Fixed, for consistent cheek weld |
| Sling Attachments | Front & rear QD points, 2 footman's loops |
| Butt-Pad | MOE SL angled-toe rubber |
| Weight Reduction vs. Gen 1 | ~5 oz lighter |
| Material | Reinforced polymer |
| Country of Origin | USA |
Frequently Asked Questions
What buffer tube sizes is the Magpul UBR Gen 2 compatible with?
The UBR Gen 2 is designed to work with Carbine-length, A5-length, and SR-25-length buffer systems, making it highly versatile across a wide range of AR-15 and AR-10 builds. It does not use a standard mil-spec or commercial buffer tube — the UBR Gen 2 utilizes its own integrated buffer tube system that ships included with the stock.
How does the UBR Gen 2 differ from the original UBR stock?
The Gen 2 retains the legendary durability and fixed-stock feel of the original while shedding nearly five ounces of weight. It also adds compatibility with A5 and SR-25 buffer systems, upgrades to the MOE SL angled-toe butt-pad for improved ergonomics, and includes integrated QD sling mounts and footman's loops — features not all found on the original design.
Is the Magpul UBR Gen 2 suitable for large-caliber AR builds like .308 or 6.5 Creedmoor?
Yes. The UBR Gen 2 was specifically engineered to accommodate large-bore AR calibers and withstand severe recoil impacts. Its reinforced construction and SR-25 buffer system compatibility make it an excellent choice for AR-10 platform rifles chambered in .308 Winchester, 6.5 Creedmoor, and similar cartridges.
