WTS: US M3 Grease Gun C&R Guide Lamp GE with extras $18,750

[tranham]

WWII M3 Grease Gun C&R 45 ACP

Made by Guide lamp for General Motors

Excellent shape and runs great

Comes with 10 NOS  magazines, 3 magazine pouchs and sling

Pictures

https://www.dropbox.com/sh/2lfuyj288rrlo2r/AAAPLFSsGMr-7qIh_vCZSQi3a?dl=0

I am listing several NFA weapons for a friend. Contact me for more information Robert 615-418-2073 tranham@hotmail.com

 

Terms are 100% upfront. Buyer pays transfer Tax and shipping. Can ship stripped gun less receiver and parts to buyer immediately

 

$19000

From Wikipedia

“The M3 was an American .45-caliber submachine gun adopted for U.S. Army service on 12 December 1942, as the United States Submachine Gun, Cal. .45, M3.The M3 was chambered for the same .45 round fired by the Thompson submachine gun, but was cheaper to produce, lighter, and more accurate. The M3 was commonly referred to as the "Grease Gun" or simply "the Greaser," owing to its visual similarity to a mechanic's grease gun.

 

Intended as a replacement for the .45-caliber Thompson series of submachine guns, the M3 and its improved successor, the M3A1 began to replace the Thompson in first-line service in late 1944 and early 1945. Due to delays caused by production issues and approved specification changes, the M3/M3A1 saw relatively little combat use in World War II

In 1941 the U.S. Army Ordnance Board observed the effectiveness of submachine guns employed in Western Europe, particularly the German 9×19mm MP 40 and British Sten guns, and initiated a study to develop its own Sten-type submachine gun in October 1942.The Ordnance Department requested the army submit a list of requirements for the new weapon, and ordnance in turn received a separate list of requirements from both the infantry and cavalry branches for a shoulder-fired weapon with full- or semi-automatic fire capability in caliber .45 ACP or .30 Carbine.

 

The two lists of requirements received by ordnance were then reviewed and amended by officials at Aberdeen Proving Ground. The amended requirement called for an all-metal weapon of sheet metal construction in .45 ACP caliber, designed for fast and inexpensive production with a minimum of machining, and featuring a dual full-automatic and semi-automatic fire capability, a heavy bolt to keep the cyclic rate under 500rpm, and the ability to place 90 percent of all shots fired from a standing position in full-automatic mode on a 6x6 foot target at a range of 50 yards. The benchmark for testing the M3's performance would be the M1928A1 Thompson.

 

George Hyde of General Motors's Inland Division was given the task of designing the new weapon, while Frederick Sampson, Inland Division's chief engineer, was responsible for preparing and organizing tooling for production. The original T15 specifications of 8 October 1942 were altered to remove a semi-automatic fire function, as well as to permit installation of a kit to convert the weapon's original .45 caliber to that of 9mm Parabellum. The new designation for the 9mm/.45 full-automatic-only weapon was the T20.

 

Five prototype models of the .45 T20 and five 9mm conversion kits were built by General Motors for testing. At the initial military trials, the T20 successfully completed its accuracy trials with a score of 97 out of 100. In the endurance test, the test weapon fired more than 5,000 rounds of brass-case ammunition, with only two failures to feed. Four army test boards composed of multiple army service branches independently tested and reviewed the T-20 prototype weapons including the Airborne Command, the Amphibious Warfare Board, the Infantry Board, and the Armored Forces Board.[6] All four branches reported malfunctions caused by the M3 magazine, mostly attributed to defective or jammed magazine followers.

 

The T-20 was formally approved by U.S. Army Ordnance for production at GM's Guide Lamp Division in Anderson, Indiana in December 1942 as the U.S. Submachine Gun, Caliber .45, M3.Guide Lamp produced 606,694 of the M3 variant submachine gun between 1943 and 1945. Although reports of malfunctions caused by the single-feed magazine design appeared during the initial firing trials, no changes were made to the M3 magazine.

 

Around 1000 M3 submachine guns in caliber 9mm Parabellum were built by Guide Lamp.[9] These original 9mm guns, identified by the markings "U.S. 9 mm S.M.G." on the left side of the magazine well (without any model designation, such as M3), were delivered to the OSS in 1944. Additionally, Rock Island Arsenal and Buffalo Arms Corporation manufactured parts for a limited number of 9mm conversion kits for the M3. Though 25,000 kits were originally requested for procurement, this was changed to a recommendation by the Ordnance Committee in December 1943 that only 500 9mm conversion kits be obtained. Procurement was authorized in February 1944, but it is believed that only a limited number of kits were actually produced. These conversion kits included a new 9mm barrel, replacement bolt and recoil springs, a magazine well adapter for use with Sten magazines, and a replacement 9mm STEN magazine of British manufacture. As the M3's sights were not altered for the new cartridge, the 9mm M3 shot high at 100 yards, but the sighting error was deemed inconsequential. The OSS also requested approximately 1,000 .45-caliber M3 submachine guns with an integral sound suppressor (designed by Bell Laboratories). Specially drilled barrels and barrel nuts were manufactured by Guide Lamp, while the High Standard Firearms Company produced the internal components and assembled the weapon. The Bell Laboratories suppressor was estimated to be only 80% as efficient as the British suppressed STEN Mk IIS.

 

With its stamped, riveted, and welded construction, the M3 was originally designed as a minimum-cost small arm, to be used and discarded once it became inoperative. As such, replacement parts, weapon-specific tools, and sub-assemblies were not made available to unit-, depot-, or ordnance-level commands at the time of the M3's introduction to service. In 1944, a shortage of M3 submachine guns created by the need for interim production changes forced U.S. Army Ordnance workshops to fabricate pawl springs and other parts to keep existing weapons operational.

 

After its introduction to service, reports of unserviceability of the M3 commenced in February 1944 with stateside units in training, who reported early failure of the cocking handle/bolt retraction mechanism on some weapons. Similar reports later came from U.S. forces in Britain who were issued the M3. An investigation revealed several deficiencies in the construction of the M3's bolt retraction mechanism, together with issues concerning barrel removal and retention as well as easily bent rear sights. As a result, several product improvements were incorporated into all new M3 production, including a new design retracting pawl with improved heat treatment, a new spring stop fitted to the right-hand brace of the retracting lever, a modified ejector featuring a cocking lever trip, a larger ratchet pad with improved heat treatment to more securely retain the barrel assembly, and strengthening gussets fitted to the sides of the fixed 'L' rear sight. After new complaints were raised about accidental magazine releases and failure of the wire buttstock to remain in place in the collapsed position, two additional changes were made to M3 production and approved by Ordnance on 31 August 1944.This included a small sheet metal guard around the magazine release button, and the inclusion of a stop between the two rods forming the wire stock at the butt end.