MASH Hook (Metal All-Purpose Snap Hook) Adapter MADE IN THE USA. The MASH Hook Adapter is made of 5625 Mil-Spec 1 tubular nylon, a 1 male National Molding side release buckle, and the MASH (Metal All-purpose Snap Hook) gateless snap hook. The MASH offers an alternative to the HK-style snap hooks in common use for sling systems. The MASH is constructed from a one piece 1 stamped stainless steel plate, and is manufactured in the United States by ITW Nexus/Waterbury Buckle. Pressing on the thumb tabs in the middle separates the two rings, allowing the MASH to be slipped into any loop attach point. It's simple to use and more secure than the HK-style snap. The MASH Adapter also includes an elastic webbing cover to aid in silencing any metal to metal contact. The MASH Hook Adapter is available in black, od-green, foliage green, and coyote tan.