The BCM Gunfighter Stock Kit Mod 0 is a complete carbine stock kit for AR-15 and M4 rifles, supplying the Mod 0 stock together with the full Mil-Spec receiver extension assembly.
Stock and hardware in one box — everything from the back of the receiver to your shoulder, built to one manufacturer's specification.
The kit pairs the Gunfighter Mod 0 stock with a 7075-T6 Mil-Spec receiver extension, an M4 castle nut, a carbine action spring, a carbine buffer and Bravo Company USA's own QD swivel mount end plate. Five parts plus the modular screw, which is all the rear of an AR-15 actually needs. The stock body is snag-free with no sharp edges to catch a sling, and it carries QD swivel sockets along with the modular VBOST tab for securing a sling when the rifle is slung or cased.
Buying the kit rather than assembling it piecemeal removes the guesswork, because every part is cut to the same specification by one manufacturer. If you already own a serviceable Mil-Spec stock and only need the tube hardware, the Milspec Carbine Stock Hardware Mounting Kit is this same hardware with no stock in the box. Check which of the two you actually want before ordering — this one includes the stock.
Why shooters choose the Gunfighter Stock Kit Mod 0
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Complete rear-end assembly — stock, receiver extension, castle nut, spring, buffer and QD end plate
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Snag-free stock body — no sharp edges to foul a sling or a plate carrier
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QD swivel sockets — a sling point without buying extra parts
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Modular VBOST tab — secures the sling when the rifle is slung or cased
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Single-manufacturer specification — no mixed-vendor tolerance stacking
What the Gunfighter Stock Kit Mod 0 fits
Fits any AR-15/M4-pattern lower receiver with a standard threaded rear, including UK straight-pull AR-15 builds, where the buffer and action spring still return the carrier after every hand-cycled stroke. Because the Mil-Spec receiver extension is in the box, nothing has to be carried over from your existing stock. Assembly needs a castle-nut wrench and a way to hold the lower securely, then torque and stake the castle nut — or have a gunsmith do the install. This kit is supplied in Black.
Specifications
| Platform |
AR-15 / M4 |
| Fits |
Any AR-15/M4 lower receiver with a standard threaded rear |
| Type |
Complete stock kit — stock, receiver extension, castle nut, carbine action spring, carbine buffer, QD end plate |
| Material |
Polymer stock, 7075-T6 aluminium receiver extension |
| Finish |
Black |
| Mount interface |
QD sling sockets, VBOST tab, QD end plate socket |
| Made in |
USA |
| Brand |
Bravo Company USA |
| MPN |
BCM-GFSK-MOD-0-BLK |
One box, one specification, done. Order the Gunfighter Stock Kit Mod 0 today — in stock at Xtreme Tactical Gun Parts with free tracked UK delivery in 7–10 days.
Explore more: Rifle & Shotgun Stocks, AR-15 Parts & Accessories or browse all Bravo Company USA.
