Staff Writer (Updated: 5/16/2016):
Externally, the M87 proved a well-contoured rifle system utilizing a conventional rifle-style configuration. The synthetic stock was a single piece unit encompassing the butt, receiver and forend. The steel components are inlaid including the barrel which protruded ahead of the weapon in the usual way. Interestingly, the pistol grip was integrated into the stock with a large cut-out for the firing hand's thumb. The trigger group included the curved trigger assembly protected by an oblong ring guard with the magazine well just ahead of the group. The bipod assembly was affixed to the lower forend to provide frontal support as the weapon was primarily intended to be fired from the prone position. The stainless steel barrel was capped by a heavily perforated muzzle brake/flash suppressor. As a bolt-action weapon, the bolt lever was offset to the right side of the body with a knob at its end for a firm grip. Optics were fitted over the receiver's steel component in the traditional way - the gun lacked any backup iron sights. The initial M87 version was a single-shot model while later versions brought about support for repeat fire through integral and detachable multi-cartridge magazines.
The United States Army trialled the M87 (among others) in its effort to find a standardized anti-material rifle and eventually selecting the Barrett M82A1 as the winner. The M87 saw additional versions developed beyond the standard M87 offering including the revised and improved "M87R" with support for a 5-round integral (fixed) box magazine. The "M93" incorporated a butt monopod, cheekpiece and folding stock with 5- or 10-round detachable box magazine support while the M95 "Ultra light", as its name implies, was a lightweight (18lb) variant with a fixed stock, titanium alloy receiver, graphite barrel and single-shot or repeating functionality.
A capable long range and accurate weapon system, the M87 went largely unappreciated in a market filled with a glut of similarly performing options the world over. The M87 was superseded by the "TAC-50" of 2000 along the Harris/McMillan lines.