• Solid "fixed stock" lockup and consistent cheek weld in all positions
  • 7 adjustments plus fully collapsed for 8 total positions
  • Visual detent position indicators
  • Adjustment lever requires only gross motor movement to operate yet the entire stock remains streamlined and anti-snag
  • Stationary cheek piece allows for consistent cheek weld for comfortable use of sights/optics and nose-to-charging handle shooting regardless of stock position
  • Mounts on a durable custom Receiver Extension tube (included) to accommodate carbine buffers and springs as well as aftermarket A5 buffer systems
  • Storage compartment in tail of stock is removable and the door is reversible for user preference
  • Rubber butt-pad offers an anti-slip surface and increases impact protection
  • Rollover on the toe allows for easier shoulder transitions and better fit when using body armor
  • Sloping cheek weld combines a slim profile with user comfort
  • QD swivel mount in end plate for ambidextrous one-point QD sling mounting
  • Rotation-limited QD swivel sling mounts fit up to 1.5" push-button swivels
  • Enhanced lock mechanism with dual locking pawls for maximum drop strength and shock resistance
  • Multi-shell construction provides solid foundation and shields critical operating parts from penetration damage
  • Available in Black, Flat Dark Earth, and OD Green
  • Made in U.S.A.

Magpul UBR Gen 2 Collapsible Stock


  • Material: Polymer, Steel, Aluminum
  • Finish: Black, Flat Dark Earth, or OD Green
  • Weight: 21.2 oz. (with Buffer Tube and End Plate)
  • Length:
    • Collapsed: 8.5"
    • Extended: 12"
  • Width: 1.7"
  • Height: 5.3"
  • Length of Pull:
    • Collapsed: ~11.8"
    • Extended: ~15.3"


  • AR-15 and AR-10


  • 1x Magpul UBR Collapsible Stock
  • 1x Butt-Pad (Installed)
  • 1x Removable Storage System (Installed)
  • 1x Magpul Custom Receiver Extension Tube (Installed)
  • 1x Custom Receiver Extension Tube Nut (Installed)
  • 1x Custom Receiver Extension Tube Nut Adapter Tool
  • 1x Cheek Riser (Installed)
  • 1x Cheek Riser Removal Tool
  • 1x Buffer Spacer


The Magpul UBR Stock offers shooters tactical preparedness and ergonomic benefits to contribute to an improved shooting experience.

Tactical Preparedness

The Magpul UBR Gen 2 collapsible stock offers you tactical preparedness by making the AR-15 smaller and easier to transport, as well as easy to adjust should multiple shooters be using the same AR-15 on range day.

The Magpul UBR Gen 2 stock also features a storage compartment, ideal for maximizing your combat readiness with whatever extra items you may need to have readily accessible.

Ergonomic Design

The Magpul UBR Stock was designed to be comfortable to operate. Featuring a sloped cheek weld, a rubber butt-pad, and a slim profile, this stock makes operating your AR-15 very smooth. Magpul designed the stock this way with the shooter in mind; this design offers protection from impact, better grip for improved handling, and better compatibility with body armor.

Made in America

This Magpul UBR Stock is made in America; purchase it with pride that you are supporting an American company and American jobs.

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