


It uses what appears to be P90 magazines. It is sold either as a single upper receiver or as a fully assembled weapon. This model is also sold as a complete rifle, supplied with two 50-round P90 magazines The T57 PDW is a 5.7x28mm upper receiver for the AR-15 platform manufactured by the Turkish MKE technical and mechanical facility. The AR-57 PDW Upper is a new design on AR-15/M16 rifles, blending the AR-15/M16 lower with a lightweight, monolithic upper receiver system chambered in FN 5.7×28mm.
