Magazine well insert converts a standard .223/5.56 AR-15 lower receiver to accept Colt SMG and modified Uzi-type 9mm magazines for use with a dedicated 9mm upper receiver. Friction-fit, top-down installation with steel tabs that fit over the top of the lower receiver to keep the adapter in place. Durable polymer body with Parkerized steel fixtures for added support. Bolt hold-open after last shot with Colt magazines only.
SPECS:
Polymer body, black. Steel feed ramp, bolt stop, ejector, Parkerized, matte black. Armorer installation recommended. Fits Mil-Spec AR-15/M16 lower receivers; Olympic arms rifles require ejector removal.
Catalog page 493