Image unavailable
Umarex Legends M3 Grease Gun .177 Caliber Full-Auto BB Gun
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$199.99
View on Sportsmans Guide
You'll be taken to Sportsmans Guide to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: WX2*0722111
Overview
Built for recreational shooting and collectors drawn to classic military styling, this BB gun channels the look and handling cues of the M3A1 “Grease Gun” in a modern CO2-powered platform. It offers both semi-automatic and full-automatic action, with open-bolt operation, blowback action, a collapsible wire stock, fixed peep-style sights, and a 3-position manual safety. The included 60-round magazine and dual 12-gram CO2 setup make it suited to short, high-volume shooting sessions where realism and fast-paced fun are the main appeal.
Why Hunters Choose the Umarex
Semi-auto Full-auto
Action offers flexible shooting modes
Open-bolt Operation
Mirrors the original M3A1 design
Collapsible Wire
Stock adds adjustable handling and
Fixed Peep-style
Sights support straightforward aiming
Includes 60-round
Magazine for extended shooting sessions
Key Features
- Based on the M3A1 "Grease Gun" submachine gun used by American troops from 1944 until the 1990s.
- Semi-automatic or fully automatic action for varied shooting sessions.
- Capable of firing up to 1,050 BBs per minute in full-auto mode.
- Powered by two 12-gram CO2 cylinders.
- Includes a 60-round magazine.
- Features a collapsible wire stock, fixed peep-style sights, and a 3-position manual safety.
Best Used For
- Collectors and enthusiasts wanting a realistic M3A1-inspired BB gun for display and handling
- Backyard shooters looking for semi-auto or full-auto BB fun with a 60-round magazine
- Users who want open-bolt operation and blowback action in a replica-style platform
- Shooters who prefer a collapsible wire stock and fixed peep-style sights for casual target sessions
- Adults seeking a CO2-powered BB gun for recreational use rather than precision training
Specifications
| Action | Semi-automatic or fully automatic |
|---|---|
| Blowback | Realistic blowback action |
| Bolt Type | Open bolt |
| Caliber | .177 Caliber |
| Included Magazine | (1) 60-rd. magazine |
| Magazine Capacity | 60 rounds |
| Platform Reference | Based on the M3A1 Submachine Gun / M3A1 'Grease Gun' SMG |
| Power Source | (2) 12-gram CO2 cylinders |
| Rate Of Fire | 1,050 BBs per minute |
| Safety | 3-position manual safety |
| Sights | Fixed peep-style sights |
| Stock | Collapsible wire stock |
| Velocity | Up to 450 FPS |
Pros
- Semi-auto or full-auto action offers flexible shooting modes.
- Open-bolt operation mirrors the original M3A1 design.
- Collapsible wire stock adds adjustable handling and storage convenience.
- Fixed peep-style sights support straightforward aiming.
- Includes a 60-round magazine for extended shooting sessions.
- Powered by two 12-gram CO2 cylinders for operation.
Considerations & Trade-offs
- Full-auto operation and blowback action can move through a 60-round magazine very quickly, so sustained shooting will require frequent reloads and CO2 changes.
- It operates on two 12-gram CO2 cylinders, which adds ongoing consumable cost and means performance depends on having fresh cartridges on hand.
- The fixed peep-style sights and collapsible wire stock are functional, but the setup is oriented toward the M3A1-style layout rather than adjustable target-style ergonomics.
- This is a BB gun built for recreational use and historical styling, so it is not a substitute for a firearm or for hunting applications that require a different platform.
Suggested Comparisons
- BB pistols and BB guns
- CO2-powered airguns
- Full-auto BB guns
- Replica submachine gun airguns
Suggested Accessories
- CO2 cylinders
- BBs
- Protective eyewear
- Spare magazine
Frequently Asked Questions
Is the Umarex Legends M3 BB Gun semi-auto or full-auto?
It offers both semi-automatic and fully automatic action.
What powers the M3 BB Gun?
It operates on two 12-gram CO2 cylinders.
What comes included with the gun?
The listed included accessory is one 60-round magazine.
Does it have a stock and sights?
Yes. It comes with a collapsible wire stock and fixed peep-style iron sights.
What safety features are listed?
The product includes a 3-position manual safety.