The KRISS USA Vector CRB G3 is a semi-automatic pistol-caliber carbine chambered in .45 ACP with a 16-inch barrel. It has a black finish and ships with an M-Lok barrel shroud and a 10-round magazine. The Vector platform uses an inline recoil system that routes the bolt mass downward on firing. 
 

Key Specifications 

• Brand: KRISS USA 
• Model: Vector CRB G3 
• Caliber: .45 ACP 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 16 in 
• Color/Finish: Black 
   

Detailed Features 

• Carbine-length 16-inch barrel qualifies as a rifle without additional federal paperwork 
• M-Lok barrel shroud for attaching accessories along the fore-end 
• Third-generation (Gen 3) design refinements over earlier Vector models 
• Accepts Glock-pattern .45 ACP magazines

Vector CRB owners are drawn to the unusual inline recoil design, which genuinely reduces muzzle rise in a way that most shooters notice immediately. The .45 ACP chambering appeals to those who already stock that ammunition, and the 16-inch barrel makes it a paperwork-free rifle.

The Gen 3 update addressed a number of ergonomic criticisms from earlier generations, though some longtime Vector users remain divided on the new controls layout. Trigger feel is a recurring discussion point; the reset is workable but rarely called exceptional.

The Vector CRB is a niche platform. Fans appreciate its mechanical novelty and compact folded profile. Critics point to the price-to-feature ratio versus more conventional pistol-caliber carbines and note that aftermarket support, while growing, is still limited compared to more common platforms.