ProMag PM237B 9mm Quick Change Adapter Block for AR-15

Enhance your AR-15 with the ProMag PM237B 9mm Quick Change Adapter Block. Crafted from high-strength polymer with a sleek black finish, this adapter block allows seamless use of 9mm Colt/SMG type magazines with AR-15/M16 lower receivers. Designed for easy installation, it features durable steel hardware, a roller, an ejector, and a bolt stop. Transform your firearm setup effortlessly, without needing to remove the bolt stop roll pin. Made in the USA for quality you can trust.