Pistol Caliber Upper Receiver
- Compatible with 9mm, 40 S&W, 357 SIG, 45ACP and 10mm
- Machined from 7075-T6 billet aluminum with a matte black hard-coat anodized finish
- Slick side upper receiver with pistol caliber sized ejection port and no forward assist or dust cover door
- Works with any mil-spec lower receiver
Dedicated AR-15 pistol caliber upper receiver compatible with 9mm, .40 S&W, .357 SIG, 45ACP and 10mm.