PS Magazine Articles

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Tag: machine guns

M249 Machine Gun: Won't Fire? Check Piston Pin
August 12, 2021 — This article initially appeared in PS 758 (May 16), p. 42. Dear Editor, Recently I was trying to repair an M249 that wouldn’t fire. It would chamber rounds and extract them with no problem... MORE

UH-60M: How to Get an M240 Ammo Can
July 20, 2021 — Dear Half-Mast, I’m trying to find information on the M240 ammo can used in the UH-60M Black Hawk. What’s the ammo can’s NSN and which TM should I use to learn more about it? SFC V.C. ... ... MORE

M249 Machine Gun: Dimple Usually Not a Problem
July 14, 2021 — This article initially appeared in PS 788 (Jul 18), p. 42. When M885A1 rounds are fired through an M249 machine gun, a small dimple is often created in the feed throat of the barrel. ... MORE

MK 19 Grenade Machine Gun: Make Sure to Lace the Bolt Correctly
May 10, 2021 — Dear Editor, during several MK 19 grenade machine gun services, we’ve noticed what could be considered incorrect wire lacing on the bolt. Nuts are laced together to reduce any and all movement or as much movement as possible. ... MORE

M2A1 Machine Gun: Barrel Extension Excessive Wear and Timing Adjustment
March 18, 2021 — Dear Editor, there are reports that some M2A1 barrel extensions have excessive wear and damage. This damage is occurring because the M2A1 timing adjustment isn’t being performed during... MORE

M2A1 Machine Gun: When Is the Flat Spring Needed?
November 12, 2020 — Don’t know if your M2A1 machine gun requires the flat spring, PN 5140428? Here’s some help. The flat spring, NSN 1005-00-514-0428, PN 5140428, on the bottom of the M2A1 machine gun’s receiver... MORE

M2 and M2A1 Machine Guns: Not All Parts Are Interchangeable
July 27, 2020 — Although the M2 and M2A1 .50-cal machine guns look alike, they aren’t. So when units swap parts from one model to the other, they risk damaging the weapon and injuring Soldiers. If your unit has both machine guns, keep the weapons and spare parts separated in the arms room to prevent any mix-ups. ... MORE

M2A1 Machine Gun: How to Install the Barrel Correctly
May 14, 2020 — Here at PS, we like to remind Soldiers and other readers of the importance of doing things right. History has shown that some Soldiers install the M2A1 barrel incorrectly. As a result, the barrel’s alignment pin shears off and the whole barrel has to be replaced. In some cases, the receiver is damaged as well. At over $1,200 a barrel and $13,000 a receiver, that burns through some serious money... MORE

M48 Machine Gun: Replacing Missing Solenoid Parts
April 7, 2020 — Dear Editor, When adjusting the timing on the solenoid of an M48 machine gun mounted on the M1117 ASV, sometimes the locking screw and washer get lost. Our search in both the M48 and M1117 TMs showed no replacements for the screw and washer... MORE

M240 Machine Gun: Not All Buffers Are the Same
March 30, 2020 — The story on the top of Page 39 in PS 801 (Aug 19) pointed out that units are seeing cracks in the M240 gun’s channels where the buffer assembly and buttstock slide in. Cracks mean the M240 must be replaced... MORE

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