The Magpul CTR is a mil-spec collapsible carbine stock for AR-15 and M4 rifles, fitting any Mil-Spec-diameter receiver extension.
The carbine stock that professionals default to — the CTR kills wobble and gives you the same cheek weld every single time.
The Magpul CTR (Compact/Type Restricted, MAG310) is built around one mechanical idea executed perfectly: a supplemental friction lock that clamps the stock body hard against the receiver extension, eliminating the rattle and play that plague standard collapsible stocks. The result is a rock-solid cheek weld that behaves like a fixed stock, from a unit that still adjusts instantly across the buffer tube's positions.
The A-frame profile sheds weight and snags, the rubber buttpad locks into the shoulder, and sling integration is comprehensive — including a standard QD socket point. It is the stock you see on duty rifles and serious training carbines for a simple reason: it removes variables, and consistent shooting is built on removed variables.
Why shooters choose the CTR
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Supplemental friction lock — zero wobble, fixed-stock stability
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Repeatable cheek weld — the same sight picture every mount
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Slim A-frame profile — light, snag-free, fast handling
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Rubber buttpad — plants in the shoulder pocket, protects the stock
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Four finishes — Black, Flat Dark Earth, Olive Drab Green, Modified Coyote Brown
What the CTR fits
Fits AR-15/M4 rifles running a Mil-Spec-diameter carbine receiver extension (buffer tube), which is the common standard on most current builds. Commercial-diameter tubes are slightly larger and will not take this version, so check your buffer tube specification before ordering. Fitting is the usual stock swap — depress the lever, seat the stock, then engage the friction lock and feel the difference immediately.
Specifications
| Platform |
AR-15 / M4 |
| Fits |
Mil-Spec carbine receiver extension |
| Material |
Reinforced polymer |
| Finish |
Black, Flat Dark Earth, Olive Drab Green, Modified Coyote Brown |
| Adjustment |
Supplemental friction lock |
| Brand |
Magpul Industries |
| MPN |
MAG310-BLK · MAG310-FDE · MAG310-ODG · MAG310-MCB |
The professional's default for a reason. Order the CTR Carbine Stock today — in stock at Xtreme Tactical Gun Parts with £5 tracked UK delivery in 7–10 business days.
Explore more: Rifle & Shotgun Stocks, Precision Rifle Stocks, AR-15 Parts or browse all Magpul.
