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Magpul UBR GEN2 Collapsible Stock - Black

Manufactured by Magpul Industries
Manufactured by Magpul Industries
6 Reviews

In Stock

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The Utility/Battle Rifle Stock GEN2 is an adjustable stock for the AR-15/M4 and AR-10/SR-25 platforms. Designed to offer the strength and stability of a fixed stock with a consistent and comfortable cheek weld. The UBR GEN2 features a fixed cheek piece which provides a consistent cheek weld in any of its eight positions.

NOTE: The UBR GEN2 includes a custom receiver extension tube, buffer spacer, and mounting hardware. A carbine buffer and spring (M4 or SR-25 length) or A5 buffer and spring are required for use and are not included.

  • Consistent cheek weld
  • 8 position stock
  • Enhanced locking mechanism with dual locking pawls
  • Maximum drop strength and shock resistance
  • Multi-shell construction
  • Removable/reversible storage compartment door
  • Anti-slip rubber buttpad
  • Front QD swivel mount for ambidextrous one-point QD sling mounting
  • Left/right rear rotation-limited QD swivel sling mounts
  • Bottom 1.25" sling loop
  • Length of pull collapsed: ~11.8"
  • Length of pull extended: ~15.3"
  • Weight: 21.2 oz

Designed to accommodate large frame ARs, this rugged stock will withstand severe impacts, yet is nearly five ounces lighter than the original UBR. Front and rear QD sling attachment points, two footman’s loops, the ergonomic MOE SL angled-toe rubber butt-pad, and a customizable storage compartment are included.
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MaterialPolymer and Aluminum
Sling MountMultiple - See Description
StorageInternal Storage
Weight1.33 lbs
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

6 reviews

  • 4 stars
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  • 3 stars
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  • 1 star
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Great for the money.

by -

The UBR has always been my favorite stock as far as looks and functionality. Feels solid. Only issue is weight. Noticable heavier than the Magpul CTR I previously had on my rifle.

UBR 2.0 Not Indestructible

by -

Buffer tube bent when rifle fell off a counter. Thought these would be resilient to that sort of damage but was wrong. My fault really but a little disappointed for such a small fall. Magpul support didn't feel it was a quality issue either.

Primary Arms shipping was fast as usual.

Love it- great stock


A little heavy but extremely comfortable and reliable. Run this on my .308 MSR that I use when I shoot 3-gun “heavy” division.


by -

They are heavier than lot of stocks, but I like the weight especially when running on SBR with suppressors.

Right price

by -

I like how tight it locks after u adjust the stick length little to no wiggle. Light weight and quick to adjust

Best collapsible stock on the market


The UBR is easily the most solid, best-engineered collapsible stock on the market. No movement whatsoever. No pulling beard hairs. A5 buffer compatible. The only downside is it is a little hefty, but not overly so. If you are trying to build a lightweight rifle, this is not for you. And balances best with an 18 or 20 inch barrel. Still, it’s one of my favorite stocks