DThe Magpul® UBR™ (Utility / Battle Rifle), U.S. Patent 6651371, is a fully-featured, adjustable butt stock for the AR15 / M16. Unlike typical collapsing stocks, this modular design offers the stability of a fixed stock with consistent cheek weld in any position. Seven-position length-of-pull (LOP) adjustment is quickly executed with gross motor movement while the integral preset system allows direct access to a preferred position. A robust lock mechanism and multi-shell construction increase durability under severe impact conditions experienced during malfunction clearing and accommodates large-bore AR calibers. The UBR™ also provides extra counterbalance weight to improve handling on full-length rifles and weapons with muzzle-heavy accessories or grenade launchers. Optional components such as dual-side sling mounts and metal strike plate allow the UBR™ to adapt to the mission at hand.
Note: The UBR™ includes the necessary Entry Receiver Extension tube and all mounting hardware. An M4 Carbine Buffer and Spring are required for use with the UBR™ and are not included
Ø Storage Module (Left-Right Reversible / Removable)
Ø Rubber Butt-Pad, 0.30” (Removable)
Rugged, adjustable carbine buttstock combines the solidness of a fixed stock with a unique set of convenience and comfort features to provide a highly versatile, stable shooting platform. The Utility/Battle Rifle (UBR) stock’s tough, reinforced polymer construction stands up to the pounding of the new large-bore chamberings found in AR-style rifles. It can handle high-tempo tactical operations, while providing an extremely secure cheeckweld in almost any position. Compact, streamlined design has minimal protrusions to snag on foliage, clothing, sling, or other gear. Provides seven length-of-pull positions, with a proprietary preset system that lets you pull the release lever and instantly snap the stock open to the position that’s right for you. Set your preferred preset position simply by moving a machine screw. Depress the Preset button and pull the release lever again to open the stock the rest of the way; then hit the Remove button, pull the release, and slide the stock completely off the UBR main tube. Comes with interchangeable narrow and ACR-style wide cheekpieces that can be installed in three positions to move the cheekweld point forward or back as needed. Includes a slot at the toe for a 1¼" sling, plus front and rear QD pushbutton sling receptacles that may be positioned on either side of the stock. Storage compartment for spare batteries, cleaning supplies, or other small items has a positive-locking door that may be positioned on either side. Or remove the compartment entirely to give the UBR a skeletonized look. Removable buttpad of synthetic rubber over hard-polymer core gives a comfortable, non-slip shoulder fit without impeding maneuverability. Kit includes Magpul’s machined aluminum “entry length” receiver extension that replaces your gun’s factory extension. If mounting on a rifle with A1/A2 fixed stock, you must also install an M4 carbine buffer and action spring (not included) for correct weapon function with UBR mounted. Instructions included.