Mark IV 22/45 Lite

The 22/45 Lite is the lightest Mark IV ever built a ventilated aluminum upper paired with a 1911-style polymer grip frame for shooters who want the Mark series accuracy in a package that points like their carry gun. This is the Massachusetts-roster non-threaded variant, factory-fitted with oversized G10 grips, an adjustable rear sight, and the same one-button takedown that makes Mark IV ownership a joy in 2025.

• .22 LR rimfire 10-round capacity (two magazines included)
• 4.4" tensioned stainless steel barrel non-threaded for MA compliance
• Lightweight ventilated aerospace-aluminum receiver
• 1911-style 22/45 polymer grip frame with oversized G10 panels
• One-button takedown for easy chamber-to-muzzle cleaning
• Factory-installed Picatinny rail for optic mounting
• Ambidextrous manual safety (convertible to left-only)
• MA Approved Roster firearm added May 2025