
Availability: In Stock
Current Stock: Out of stock
The Brigade Mk-15 5.56 is a modern AR-15 pistol built for shooters who want a compact, controllable platform without the traditional buffer tube. This 10.5-inch barreled pistol combines a short-stroke gas piston system with all the familiar AR controls you already know, making it a natural fit whether you're setting up a truck gun, building a specialized .223 Rem/5.56 NATO pistol, or experimenting with a piston-driven alternative to direct-impingement designs. The Mk-15 strips away complexity — no buffer spring, no buffer tube — while keeping the modularity and ergonomics that make AR platforms so popular.
Built in the USA from 7075-T6 billet aluminum, the upper and lower receivers are CNC machined for precision and durability. The 10.5-inch 4150 CMV nitride barrel sports a 1:7 twist and comes threaded 1/2 x 28 with a 3-prong muzzle device already attached. The forend features a 9-inch M-LOK rail that leaves plenty of real estate for lights, lasers, or backup accessories, while the rear 1913 Picatinny rail accepts standard optic mounts. An ambi takedown lever and mil-spec trigger come standard, and you get flip-up iron sights and a 30-round magazine in the box — everything you need to get downrange immediately.
At 7 pounds total, the Mk-15 handles quick and fast without feeling like a toy. The non-reciprocating side charging handle means your optic stays protected and your cheek weld stays consistent. Whether you're running suppressed, doing close-quarters drills, or just want a short-barreled 5.56 pistol that works like an AR, the Brigade Mk-15 delivers the modularity and control you expect from the platform without unnecessary weight or complexity.
| Caliber | 5.56 NATO |
| Barrel Length | 10.5 inches |
| Barrel Material | 4150 CMV, nitride finish |
| Barrel Twist | 1:7 |
| Muzzle Thread | 1/2 x 28 |
| Receiver Material | 7075-T6 billet aluminum, CNC machined |
| Operating System | Short-stroke gas piston, bufferless |
| Charging Handle | Non-reciprocating, side-mounted |
| Forend Rail | 9-inch M-LOK (1.34 ID) |
| Rear Rail | 1913 Picatinny |
| Takedown Lever | Ambi |
| Trigger | Mil-spec |
| Included Accessories | Flip-up sights, 30-round magazine, 3-prong muzzle device |
| Weight | 7 lbs |
| Country of Origin | USA |
| Warranty | Lifetime |
The Mk-15 ships with flip-up iron sights, a 30-round magazine, and a 3-prong muzzle device already installed on the barrel. Everything is ready to mount an optic and hit the range or field.
Yes — the Brigade Mk-15 uses familiar AR-15 pattern controls, so you can integrate standard AR accessories, triggers, and grip configurations. The short-stroke piston system operates independently of the trigger group, so most mil-spec components work without modification.
The 1/2 x 28 threaded barrel is compatible with standard 5.56 suppressors. The short-stroke gas piston design typically runs efficiently with a suppressor, though your muzzle device and suppressor mounting method will depend on your specific can.
Instead of routing gases back into the receiver like a direct-impingement AR, the Mk-15's short-stroke piston cycles independently. The bufferless design eliminates the buffer tube and spring, resulting in a more compact platform and different recoil impulse characteristics. It's a cleaner system that some shooters prefer, especially in compact builds.

SKU: 198467148 • Weight: 8.6oz





Availability: In Stock
Current Stock: Out of stock
The Brigade Mk-15 5.56 is a modern AR-15 pistol built for shooters who want a compact, controllable platform without the traditional buffer tube. This 10.5-inch barreled pistol combines a short-stroke gas piston system with all the familiar AR controls you already know, making it a natural fit whether you're setting up a truck gun, building a specialized .223 Rem/5.56 NATO pistol, or experimenting with a piston-driven alternative to direct-impingement designs. The Mk-15 strips away complexity — no buffer spring, no buffer tube — while keeping the modularity and ergonomics that make AR platforms so popular.
Built in the USA from 7075-T6 billet aluminum, the upper and lower receivers are CNC machined for precision and durability. The 10.5-inch 4150 CMV nitride barrel sports a 1:7 twist and comes threaded 1/2 x 28 with a 3-prong muzzle device already attached. The forend features a 9-inch M-LOK rail that leaves plenty of real estate for lights, lasers, or backup accessories, while the rear 1913 Picatinny rail accepts standard optic mounts. An ambi takedown lever and mil-spec trigger come standard, and you get flip-up iron sights and a 30-round magazine in the box — everything you need to get downrange immediately.
At 7 pounds total, the Mk-15 handles quick and fast without feeling like a toy. The non-reciprocating side charging handle means your optic stays protected and your cheek weld stays consistent. Whether you're running suppressed, doing close-quarters drills, or just want a short-barreled 5.56 pistol that works like an AR, the Brigade Mk-15 delivers the modularity and control you expect from the platform without unnecessary weight or complexity.
| Caliber | 5.56 NATO |
| Barrel Length | 10.5 inches |
| Barrel Material | 4150 CMV, nitride finish |
| Barrel Twist | 1:7 |
| Muzzle Thread | 1/2 x 28 |
| Receiver Material | 7075-T6 billet aluminum, CNC machined |
| Operating System | Short-stroke gas piston, bufferless |
| Charging Handle | Non-reciprocating, side-mounted |
| Forend Rail | 9-inch M-LOK (1.34 ID) |
| Rear Rail | 1913 Picatinny |
| Takedown Lever | Ambi |
| Trigger | Mil-spec |
| Included Accessories | Flip-up sights, 30-round magazine, 3-prong muzzle device |
| Weight | 7 lbs |
| Country of Origin | USA |
| Warranty | Lifetime |
The Mk-15 ships with flip-up iron sights, a 30-round magazine, and a 3-prong muzzle device already installed on the barrel. Everything is ready to mount an optic and hit the range or field.
Yes — the Brigade Mk-15 uses familiar AR-15 pattern controls, so you can integrate standard AR accessories, triggers, and grip configurations. The short-stroke piston system operates independently of the trigger group, so most mil-spec components work without modification.
The 1/2 x 28 threaded barrel is compatible with standard 5.56 suppressors. The short-stroke gas piston design typically runs efficiently with a suppressor, though your muzzle device and suppressor mounting method will depend on your specific can.
Instead of routing gases back into the receiver like a direct-impingement AR, the Mk-15's short-stroke piston cycles independently. The bufferless design eliminates the buffer tube and spring, resulting in a more compact platform and different recoil impulse characteristics. It's a cleaner system that some shooters prefer, especially in compact builds.
SKU: 198467148 • Weight: 8.6oz
