Arex Delta X 9mm Optic Ready (Plate Kit included) Striker Fired 4 Barrel interchangeable Back straps Gray Frame Black Nitride Slide Mags 1x 17+1 & x 19+1 - TECHNICAL SPECIFICATION - Length: 183 mm // 7.2 - Height: 131 mm // 5.1 - Width: 30 mm // 1.18 - Barrel length: 102 mm // 4.0 - Weight w/o mag: 541 g // 19.0 oz - Weight w mag: 625 g // 22.0 oz - OR Weight w/o mag: 510 g // 17.9 oz - OR Weight w mag: 594 g // 20.9 oz