Umarex Legends M3 Grease Gun CO2 177 Cal BB Air Rifle

The Umarex Legends M3 Grease Gun is a CO2-powered air rifle replica modeled on the M3A1 submachine gun used from 1944 onward. It fires .177 caliber steel BBs from an open-bolt blowback action and offers both semi-automatic and fully automatic operation, with a three-position manual safety for control.

Key specifications include a 60-round drop-free magazine, a collapsible wire stock, peep-style iron sights, and a rated rate of fire of 1,050 BBs per minute. Muzzle velocity is listed at 410 fps, while the raw listing gives 460 fps, so verify before relying on either figure. The flip-open dust cover gives access to the bolt's cut-away thumb charging slot.

The gun is powered by two 12-gram CO2 cartridges, and the listing estimates about 120 BBs per full charge.

• Type: CO2 air rifle (replica)
• Caliber: .177 (BB)
• Ammunition: Steel BBs
• Capacity: 60 rounds
• Action: Semi or fully automatic, open-bolt blowback
• Sights: Peep-style iron sights
• Rate of fire: 1,050 BBs per minute
• Power: Two 12-gram CO2 cartridges