ATS loads this 55-grain M193-spec round to 3150 fps, generating 1210 ft-lbs of muzzle energy. That places it at the conservative end of the M193 velocity range. Winchester White Box runs 30 fps faster at 3180, and GGG pushes 180 fps ahead at 3330 fps. Where ATS stands out is the ballistic coefficient: a G1 BC of 0.371 is significantly higher than Winchester's 0.246. That number means better velocity retention at distance and less wind drift, even though it starts slower at the muzzle.

ATS is a Lithuanian manufacturer with NATO military supply contracts. The ammunition comes from the same production facilities that equip Baltic state armed forces. The 55-grain FMJ uses a standard lead core with copper jacket, no steel components. This makes it welcome at every indoor and outdoor range without restriction. The higher BC suggests a slightly more aerodynamic ogive profile than competing M193 loads, which pays dividends past 200 yards where bullet drag becomes a real factor.

Budget-focused training is where this load fits best. The moderate velocity generates less felt recoil and lower chamber temperatures than hotter options like GGG and ZSR. That translates to longer barrel life and less wear on extractors and gas rings over thousands of rounds. For shooters who prioritize round count over raw velocity, ATS offers genuine NATO-contract ammunition at an accessible price point. The 55-grain bullet stabilizes in any twist rate from 1:12 down to 1:7, so barrel compatibility is a non-issue across the entire AR-15 platform.