The problems with the trigger group and gas system were often rectified by wire tying the pieces into place but reflect poorly on the general state of the design.Īnother big problem was with the quick change barrel. The gas system also tended to unthread itself. The plate could walk off, resulting in the trigger group falling off, sometimes resulting in a runaway gun. The trigger group was also held by two pins held in with a flat spring. The M60 feed tray could also not be closed with the bolt forwards, as this would bend parts within the belt feeding mechanism. In contrast, the heavier M240 has been known to go for upwards of two million rounds without receiver repair. This caused the lightweight receivers to stretch and even crack, and gages were issued to armorers to determine when replacement should occur, which usually happened around 100,000 rounds or so. In the door gunner role, M60s could fire upwards of 5000 rounds a day, laying down constant suppressing fire onto landing zones before helicopters came in. While it served well for many soldiers, providing heavy, accurate firepower, it also revealed many more flaws in the design. Lightweight buttstock with hinged shoulder rest and improved buffer attachment mechanism provides for fail-safe attachment of the buttstock to the receiver.The M60 would see its first combat use in the Vietnam War in 1965 with the U.S. Receiver mounted ammunition hanger provides a stable and secure mounting point for ammunition pouch and isolates the feed tray from accidental damage. New flat spring latch on trigger assembly prevents accidental detachment of the trigger assembly. Improved trigger group prevents incorrect assembly and features andambidextrous safety and winter/NBC trigger guard. 30% improved belt pull provides increased reliability. M1913 rail topcover allows for mounting of optics and eliminates charging jams and improves operator safety by allowing a belt loadedbut not charged feature. Hard chrome and induction hardening of oprod tube facilitates easiercleaning and increases the service life of the receiver. Lightweight forearm/pistol grip for improved control with (3) M1913 rails for mounting aiming lasers and accessories. Lightweight one-hand operated receiver mounted bipod eliminates the weight of the bipod on the spare barrel. Offset barrel handle provides a clear sight picture and eliminates the need for a heat mitten for barrel changes. Adjustable front sight allows zeroing of primary and spare barrels. Fail-safe reversible gas piston with simplified gas system.
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