Editor’s Choice: Umarex Legends M3 Grease Gun

by
posted on November 21, 2023
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Umarex Legends M3 Grease Gun

The original M3 “grease gun” was developed in the early 1940s and adopted by the U.S. Army in 1943 as a cost-saving alternative to the much more complex and difficult-to-produce Thompson submachine gun. In much the same vein, Umarex has now developed its own CO2-powered airgun version of the M3 that costs a fraction of a fraction of the genuine article—which today will run you between $20,000 and $40,000—and fires .177" steel BBs rather than .45 ACP cartridges.

A member of the Umarex Legends series of historical replicas, the airgun is a facsimile of the late-war M3A1 variant that is capable of both semi- and full-automatic fire, thanks to a three-position selector/safety located under the receiver in front of the trigger guard. As with the real M3A1, which did away with the right-side charging handle of the original M3, the Legends Grease Gun fires from an open bolt and is charged via a simple slot cut into the bolt itself. Up to 60 BBs are loaded into the front of the detachable box magazine, while two 12-gram CO2 capsules installed into the bottom of the box power the airgun. The Umarex M3 has the original’s same appearance of being manufactured from stamped-and-welded sheet metal, and weighs just shy of 8 lbs. fully loaded.

Umarex’s Legends M3 Grease Gun launches its BBs up to 450 f.p.s. at a firing rate of 1,050 BBs per minute. Holding down the trigger in full-auto mode causes the M3 to blurt through its entire payload in less than four seconds—and the airgun’s sub-rimfire level of felt recoil makes it easy to keep the fixed aperture rear and post front sights on target, even during fully automatic fire. In short, it’s about as much fun as can be had on the range without lighting off a single primer—particularly when used with targets like Birchwood Casey’s Shoot-N-C line of products that really highlight all the rapid-fire impacts.

MSRP is $249. For more information, visit umarexusa.com.

Latest

Gotw Savage Arms 110 Core Tactical 1
Gotw Savage Arms 110 Core Tactical 1

Gun of the Week: Savage Arms 110 Core Tactical

Recently, Savage Arms has embarked on an ambitious project to update and modernize its extensive line of bolt-action rifles, and one of the latest enhanced models available is the company's 110 Core Tactical bolt-action.

Political Report | NRA Responds to ATF’s Regulatory Overhaul

Administrative rules are not the most glamorous aspect of national governance. But they are fundamental to bureaucracy’s inner workings and how they affect, for better or for worse, the daily lives of ordinary Americans.

The Armed Citizen® Sept. 25, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

U.S. Troops Using Captured Small Arms in World War II

American troops took a healthy interest in Axis small arms during World War II. Sometimes they were simply looking to collect a war trophy. On other occasions, GIs and Marines looked to use those firearms against their former owners.

Standing Guard | The Midterms and Freedom

Politics is something most of us only step into because we must. We’d rather smile in the warm autumn sun as we help a son or daughter, or grandson or granddaughter, break their first clay or plink steel with their first .22 rifle.

America’s Retaliation for the Lives Taken by Iraqi Sniper “Juba”

The killing of the Iraqi insurgent sniper known as "Juba" was a collective effort by thousands of Marines, culminating in one single shot.

Interests



Get the best of American Rifleman delivered to your inbox.