The Kriss Vector SDP is a family of semi-automatic pistols chambered in a variety of calibers. These pistols feature flip up adjustable front and rear sights as well as a pair of picatinny rails allowing users to attach their choice of optics and other accessories. The Vector SDPs 5.5 barrel is manufactured from 4140 chromoly steel while the furniture is black polymer composite. Details Caliber 45ACP - Operating System Closed Bolt Delayed-blowback - Overall Length 16.75 in - Overall Height 6.8 in - Barrel Length 5.5 in - Weight (Unloaded) 5.9 lbs - Threaded Pitch M16x1 LH - Magazine G21 13rds KRISS MagEx 25 rds