B&T USW-G20 Conversion Kit for Glock 40/20/21 ACRO Interface

The B&T USW-G20 Conversion Kit for Glock 40/20/21 with ACRO Interface transforms your duty or defensive Glock into a compact carbine platform without requiring permanent modifications. This conversion kit enables transition between pistol and shoulder-fired configurations in under one second, allowing operators to leverage the velocity and control advantages of a stabilizing stock while maintaining the original Glock's standalone capability. The quick-transition design addresses a persistent operational gap: pistol-sized platforms gain rifle-level sight radius and recoil management when needed, then revert to concealment-ready status just as quickly.

Compatible with all Glock pistols featuring a standard Picatinny rail, the USW-G20 conversion kit accommodates both factory iron sights and optional red dot optics simultaneously, providing true backup sight redundancy—a critical feature for duty or training environments where optical failure cannot degrade target engagement capability. The ACRO interface designation confirms compatibility with modern compact reflex sights, ensuring your existing or future optics investment integrates seamlessly. The folding stock design preserves packability and vehicle storage when the platform operates in pistol configuration, making this conversion kit practical for patrol vehicles, duty bags, and tactical deployments where space is restricted.

Law enforcement, military support personnel, and civilian shooters operating 10mm or .45 ACP Glocks recognize that platform consistency reduces training overhead—this conversion extends the utility of existing firearm investments without requiring mastery of an entirely different manual of arms. The sub-two-second stock deployment cycle meets tactical timelines where transition speed between configurations directly impacts engagement readiness.

Glock conversion platforms occupy a distinct category within the defensive carbine market, positioned between full-size rifles and pistol-braced solutions. The USW-G20 design prioritizes modularity and speed of reconfiguration, appealing to operators who value flexibility and minimal profile when not actively shouldering the firearm. Weighing 1.2 lbs with compact stowed dimensions, the kit adds minimal encumbrance to your platform.