Tippmann Arms Company M4-22 Micro Compact, Semi-Automatic Pistol, AR, 22 LR, 7 Barrel, A2 Birdcage Flash Hider, Matte Finish, Black, Free Float Aluminum M-LOK Handguard, Picatinny Rear Adapter, Front/Rear Flip Sights, 25 Rounds, 1 Magazine A101191 The M4-22 Micro Compact Pistol is a premium .22 caliber semi-automatic AR styled pistol with aluminum upper and lower receivers and all the features of a true M4 pistol. The Micro Elite Pistol features a 7 inch barrel, 5.5 inch aluminum MLok handguard, Compact Bolt System, Rear Pic Rail and weighs only 3.45lbs.