Description
Modern carbines are moving away from the traditional buffer tube, and the Magpul Universal Carbine Stock (UCS) is Magpul's answer for the platforms that use a vertical M1913 Picatinny rail at the rear of the receiver instead. This is the OD Green version, and it turns a bare rear rail into a compact, foldable, tune-to-fit shoulder stock that mounts up cleanly without any gunsmithing. If your build runs a rear 1913 rail, this is one of the more versatile stock options out there.
The reason folks reach for the UCS is the sheer amount of adjustability packed into it. You get three inches of length of pull spread across six positions, changed on the fly using the LOP buttons on either side, so it fits comfortably whether you're in a t-shirt or layered up in a plate carrier. The reversible hinge lets you set it to fold left or right depending on your charging handle, controls, and how you like to store or carry the gun, and there's a built-in five degrees of drop to keep the stock clear of ejection and charging paths.
Dialing In Your Cheek Weld With The UCS
Head position makes or breaks a good sight picture, and the UCS gives you real control here. It ships with two snap-in cheek risers, 0.50 inch and 0.75 inch, and the reversible M1913 clamp adds a half-slot of height adjustment on the rail itself. Between the riser height and clamp position, you can line your eye up behind irons or an optic without fighting the gun. A reversible, anti-rotation QD sling socket is built in too, so you can stage your sling exactly how you run it.
Where The Magpul Universal Carbine Stock Fits
This one is happiest on platforms with a factory rear 1913 rail or an aftermarket adapter, think the SIG MCX and MPX, FN SCAR, IWI Galil, CZ Scorpion, Brownells BRN-180, Ruger LC Carbine, and various AK variants set up for it. At roughly 18 ounces and 7.6 to 10.6 inches overall, it stays balanced and compact. It also carries a MOE SL Enhanced Rubber Butt-Pad for a quick, comfortable shoulder mount, and like the rest of the Magpul lineup, it's made in the USA out of proven polymer and hardware.
Key Specifications
- Manufacturer: Magpul Industries
- Model: Universal Carbine Stock (UCS)
- Manufacturer Part Number: MAG1441-ODG
- UPC: 840815149286
- Color: OD Green
- Finish: Matte
- Fit: M1913 Picatinny Rail (rear receiver)
- Length of Pull Adjustment: 3 inches across 6 positions
- Overall Length: 7.6 to 10.6 inches
- Weight: 18 oz
- Folding: Reversible hinge, left or right
- Drop Angle: 5 degrees
- Cheek Risers: 0.50 in and 0.75 in included
- Sling Mount: Reversible anti-rotation QD socket
- Butt-Pad: MOE SL Enhanced Rubber, 0.70 in
- Country of Origin: USA
What’s Included
- Magpul Universal Carbine Stock (UCS) in OD Green
- 0.50 inch cheek riser
- 0.75 inch cheek riser
- Reversible M1913 mounting clamp
- MOE SL Enhanced Rubber Butt-Pad (0.70 in)
- Reversible anti-rotation QD sling socket
- Install instructions
Frequently Asked Questions
What rifles does the Magpul UCS stock fit?
The UCS is built for firearms that have a vertical M1913 Picatinny rail at the rear of the receiver rather than a buffer tube. That covers platforms like the SIG MCX and MPX, FN SCAR, IWI Galil, CZ Scorpion, Brownells BRN-180, Ruger LC Carbine, and various AK variants set up with a rear 1913 rail. If your receiver has a factory rear rail or an aftermarket 1913 adapter, this stock mounts up cleanly.
Can the UCS fold to the left or the right?
Yes. The reversible hinge lets you configure it to fold either direction, so you can set it up around your charging handle, controls, and how you prefer to carry or store the gun. Reversing it is a straightforward job with a hex wrench.
How does the length of pull adjustment work on the Universal Carbine Stock?
You get three inches of length of pull spread across six positions, adjusted using the LOP buttons on the sides of the stock. That range makes it easy to fit different builds and lets you shorten things up when you're wearing a plate carrier or bulky gear. It's an ambidextrous setup, so it works the same from either side.
Does the Magpul UCS come with cheek risers?
It does. The stock ships with two snap-in cheek risers, 0.50 inch and 0.75 inch, so you can raise your cheek weld to line up behind an optic or irons. Combined with the reversible M1913 clamp, which adds a half-slot of height adjustment, you can fine-tune your head position for a clean sight picture.






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