Magpul UBR GEN 2 Adjustable Stock
The Magpul UBR GEN2 Collapsible Stock is built for shooters who want the stability of a fixed stock with the flexibility of an adjustable design. It fits AR-15/M4 and AR-10/SR25 platforms and uses a custom included A5/SR25-length receiver extension to provide a consistent cheek weld, strong lockup, and eight total positions. The result is a stock that feels solid in use while still allowing quick length-of-pull changes for different shooting positions, body armor, or gear setups.
Designed for hard-use rifles, the UBR GEN2 features a reinforced lock mechanism with dual locking pawls, a sloping cheek weld, a reversible storage compartment, and multiple sling attachment options. Magpul also includes the required custom receiver extension tube, buffer spacer, and mounting hardware with the stock, though a compatible carbine or A5 buffer and spring are still required for use.
Features
- Eight total positions with fixed-stock style lockup
- Includes custom A5/SR25 receiver extension tube
- Consistent cheek weld through all positions
- Reversible, removable storage compartment
- Front and rear ambidextrous QD sling sockets
- Includes footman’s loop, with a second loop accessible under the storage compartment
- MOE SL angled rubber butt-pad for grip and easier shoulder transitions
- Reinforced lock mechanism with dual locking pawls
- Made and engineered in the USA
Specifications
- Model: MAG482
- Platform Compatibility: AR10 / M110, AR15 / M4
- Compatibility: Any small or large frame AR
- Length of Pull, Collapsed: Approx. 11.3 in.
- Length of Pull, Extended: Approx. 14.8 in.
- Length of Pull Adjustment Range: 3.5 in.
- Length: 8.5 to 12.0 in.
- Height, Max: 5.3 in.
- Width, Max: 1.7 in.
- Weight: 18.8 oz.
- Weight with Receiver Extension: 21.3 oz.
- Included Components: Custom receiver extension tube, buffer spacer, mounting hardware
- Required for Use but Not Included: Carbine buffer and spring or A5 buffer and spring














