ProMag PM237B AR-15/ M16 9mm Magazine Quick Change Adapter Block, Black

Year after year, ProMag has increasingly become one of the leading manufacturers of firearms magazines in the world. Gun enthusiasts and law enforcement personnel have agreed, be it for recreational "plinking", competition shooting, or law enforcement, Promag is the source you can count on.

This is ProMag's 9mm Magazine Adaptor Block. It easily installs in AR-15 lower-receivers and allows the use of 9mm Colt SMG in Colt pattern 9mm upper-receivers. The block is constructed of high a strength polymer with steel hardware, roller, ejector, and bolt stop.

Specifications:

- Fits: Standard AR-15 Magwell
- Material: Constructed of high a strength polymer
- Caliber: 9mm
- Steel hardware
- Roller, ejector, and bolt stop
- Color: Matte Black Finish