ProMag Quick Change Adapter Block, Black - PM237B

ProMag's Quick Change Adapter Block allows your AR15/M16 rifle to accept 9mm magazines without permanently altering your weapon.The PM237B 9mm magazine adaptor block easily installs in AR-15/M16 lower receivers to allow the use of 9mm Colt/SMG type magazines with 9mm upper receivers. The block is constructed of high strength polymer with steel hardware, roller, ejector, and bolt stop. Improved design allows quick install without the need to remove the bolt stop roll pin. Made in USA.Features:9mm magazine adaptor blockInstalls in AR-15 lower receiversAllows the use of 9mm Colt / SMG type magazines with 9mm upper receiversMade of high strength polymer with steel hardware, roller, ejector, and bolt stopQuick installation without the need to remove the bolt stop roll pinMade in USA