General Dynamics XM806 (LW50MG)

Prototype Heavy Machine Gun (HMG)

United States | 2009

"The General Dynamics XM806 competed unsuccessfully to replace the long-running Browning M2 Heavy Machine Gun series."

Authored By: Staff Writer | Last Edited: 05/12/2021 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

The XM806 was initially developed as a "lightweight" heavy-class, belt-fed machine gun for the United States Army as possible replacement for the legendary Browning M2 heavy machine gun line. The program was headed by General Dynamics and given the long-form designation of "Lightweight .50 Caliber Machine Gun" (LW50MG). The new weapon followed the abandoned XM312 which, itself, was intended as a replacement for the venerable Browning M2. The XM806 was developed along these same lines before the program was cancelled in full in July of 2012.

The XM806 weighed some 40lbs sans its tripod assembly and featured a recoil-operated, belt-fed (m9 belts) action chambered for the .50 BMG cartridge. Its rate-of-fire was 265 rounds-per-minute and the weapon could achieve a sustained rate of 40 rounds-per-minute if pressed. A specially-designed M145 optic system was supported though iron sights were standard. The optics could be fitted across a span of Picatinny rail seated over the receiver. The charging handle was set to the right side of the rectangular receiver with a barrel change handle along the left. Barrel-changing was a requirement of such air-cooled weapons, lest they fracture or deform due to the generated heat of each successive shot. The muzzle was capped by a conical flash suppressor and actuation of the weapon was through traditional spade-type grips at the rear.

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While the XM806 was evolving into a promising battlefield system, it program delays and ultimate disinterest led to its cancellation. In turn, the US Army furthered the M2A1 mark for the Browning M2 line which brought about use of a Quick-Change Barrel (QCB), reduced muzzle flash and other refinements over the original, long-running weapon. It was expected that some 45,000 M2s were to be "modernized" to the new M2A1 standard.

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Performance
Performance specifications presented assume optimal operating conditions for the General Dynamics XM806 (LW50MG). Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.

40
Rounds-Per-Minute
Rate-of-Fire

Physical
The physical qualities of the General Dynamics XM806 (LW50MG). Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.

1,562 mm
61.50 in
O/A Length

39.68 lb
18.00 kg
Weight

Recoil-Operated; Belt-Fed
Action

.50 BMG
Caliber(s)

265 Belt
Feed

Iron Sights; Optional M145 Machine Gun Optic Scope
Sights

Variants
Notable series variants as part of the General Dynamics XM806 (LW50MG) Prototype Heavy Machine Gun (HMG) family line.

XM806 - Base Developmental Series Designation

LW50MG ("Lightweight .50 Caliber Machine Gun") - Alternative Designation.

Operators
Global customers who have evaluated and/or operated the General Dynamics XM806 (LW50MG). Nations are displayed by flag, each linked to their respective national small arms listing.

Contractor(s): General Dynamics - USA

[ United States ]

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Image of the General Dynamics XM806 (LW50MG)

Going Further...
The General Dynamics XM806 (LW50MG) Prototype Heavy Machine Gun (HMG) appears in the following collections:

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