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Calico M900 vs ISSC MK22
Side-by-side technical comparison
Calico M900
RiflesDiscontinued
Overview
Spec
Calico M900
ISSC MK22
Production
1989–2003
2010–2016
Units produced
Approximately 10,000
Unknown; estimated tens of thousands produced
Specifications
Spec
Calico M900
ISSC MK22
Overall length
864 mm (34.0 in)
876-953 mm (34.5-37.5 in) depending on stock position
Barrel length
406 mm (16.0 in)
419 mm (16.5 in)
Weight
1,810 g (64.0 oz) unloaded
2.95 kg (6.5 lb) empty
Magazine capacity
100 rounds
10 rounds standard; 22-round extended magazine available
Action type
Blowback
Straight blowback, closed bolt, semi-automatic
Trigger type
Single Action
Single-stage, non-adjustable
Sights
Adjustable rear aperture, front post
Picatinny top rail; flip-up front and rear sights (model dependent)
Calibers
Calico M900
ISSC MK22