5.7x28mm – 62 gr Subsonic FMJ – Fiocchi (57SUB62) – 500 Rounds

Shooters who run a suppressor on their 5.7 want a load that stays below the speed of sound so the gun is as quiet as possible. This listing is Fiocchi Range Dynamics 5.7x28mm subsonic 62 grain full metal jacket ammunition, MPN 57SUB62, sold as a 500 round case. Buying subsonic 5.7×28 ammo in bulk lets you test it in your firearm, then keep a steady supply for suppressed range sessions and training.

The heavy 62 grain full metal jacket bullet is what makes this a subsonic 5.7×28 load. Fiocchi rates it at 1,050 fps, below the speed of sound, which removes the supersonic crack that standard 5.7 loads produce and lets a suppressor do its job. The FMJ design is a range and training bullet rather than a defensive one. Keep in mind that subsonic loads may not cycle every firearm reliably, especially unsuppressed, so test this ammunition in your gun before buying in quantity for serious use.

This load is intended for quiet suppressed shooting and range training with the FN Five-seveN, FN PS90 and P90, Ruger-57, Smith & Wesson M&P 5.7 and PSA Rock. Suppressor owners, and shooters who want a quieter option for practice, are the core audience. A common question is whether subsonic 5.7 will run in a given pistol, and the honest answer is that it depends on the gun, so a test first is the right move. Once it runs well in your firearm, the 500 round case is the efficient way to stock up.

Fiocchi 57SUB62 is made in the USA by Fiocchi of America, a domestic load, and it is new production ammunition, not reloads. Each round uses a brass case with a boxer primer, and the ammunition is non-corrosive. The bullet is a 62 grain full metal jacket loaded to subsonic velocity. The case ships in factory packaging as 10 boxes of 50 rounds, for a total of 500 rounds of 5.7x28mm subsonic ammunition for suppressed shooting and range training.