ZSR's M193 clone fires a 55-grain FMJ at 3240 fps, one of the hottest loadings in the M193 category. Only GGG's 3330 fps exceeds it. That velocity puts 1224 ft-lbs of energy on target at the muzzle. ZSR is a Turkish ammunition manufacturer that supplies NATO-member military contracts, so this is genuine mil-spec production rather than a commercial approximation. The brass cases use standard boxer primers and are fully reloadable.

The higher velocity gives ZSR a practical edge over mid-pack M193 loads like Winchester's 3180 fps and ATS's 3150 fps. At 200 yards, the extra 60-90 fps translates to a flatter trajectory and slightly more retained energy. The 55-grain projectile fragments reliably above 2700 fps, and ZSR's hot loading extends that fragmentation range by roughly 20-30 yards compared to slower alternatives. A G1 BC of 0.243 is standard for flat-base 55-grain FMJ bullets and matches PMC's offering.

This ammunition fits shooters who want to maximize performance from the M193 specification without stepping up to premium match loads. The extra velocity helps short-barreled ARs (10.5" to 14.5") maintain effective terminal performance at ranges where slower loads drop below the fragmentation threshold. For carbine courses and defensive training, ZSR's hotter charge gives you more margin. The lead-core FMJ construction is range-friendly at any facility, unlike steel-core M855 green tips. Expect reliable function across gas system lengths, though the higher chamber pressure may cause slightly faster bolt carrier velocities in overgassed rifles.