Chiappa Firearms M4-22 Gen II Pro 22 LR 16" Upper - Includes 2 28-Rd Mags

The Chiappa M4-22 Gen II Pro Upper is a 22 LR complete upper assembly engineered to drop onto any MIL-SPEC lower receiver, giving shooters a low-recoil rimfire companion for training, plinking, and hunting. This upper is built around a 16" heavy-contour steel barrel finished in black parkerized for corrosion resistance and long service life, paired with an A3-style polymer receiver in matte black that keeps weight down while preserving familiar AR-style ergonomics.

The barrel is chambered in 22 LR with a 1:16" twist rate well suited to standard and high-velocity rimfire ammunition. A 7.80" quad Picatinny rail handguard in black provides ample real estate for red dots, magnifiers, lights, and lasers, and the upper ships optic ready with no iron sights installed, letting the shooter mount their preferred optic directly to the rail. MIL-SPEC compatibility means this upper mates with standard AR-15 lower receivers, allowing quick conversion between rimfire and centerfire configurations on a single registered lower.

The package includes two 28-round magazines, so you can load up and get right to plinking or training right out of the box. Listed for hunting and target use, the M4-22 Gen II Pro Upper delivers a versatile rimfire solution in a familiar form factor that shares controls and manual of arms with the AR platform.