The Chiappa M4-22 G2 Upper Receiver converts standard AR-15 lower receivers to fire .22 LR ammunition.
- Caliber: .22 LR
- Type: Complete upper receiver assembly
- Compatible Lower: Mil-spec AR-15
- Barrel Length: 16 inches
- Material: Aluminum
- Finish: Matte black
- Includes: Upper receiver, barrel, BCG, charging handle, 10-round magazine
- Installation: Direct attachment to AR-15 lower, no gunsmithing required
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