The ProMag AR-15 M16 Magazine Quick Change Adapter Block 9mm is a 9mm magazine adapter block that installs in AR-15 lower receivers. It allows the use of 9mm Colt and SMG type magazines with 9mm upper receivers and is made of high strength polymer with steel hardware, roller, ejector, and bolt stop. The installation is quick without the need to remove the bolt stop roll pin. It is also made in the USA.
9mm magazine adaptor block
Installs in AR-15 lower receivers
Allows the use of 9mm Colt and SMG type magazines with 9mm upper receivers
Made of high strength polymer with steel hardware, roller, ejector, and bolt stop
Quick installation without the need to remove the bolt stop roll pin
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