SS190 duty The SS190 FMJ, a refinement of the SS90, was introduced in 1993.[6] It offered superior performance over the prototype projectile as well as slightly reduced length.[6] The latter change allowed it to be used more conveniently in the Five-seven pistol also being developed at that time.[9] Fired from the P90, the SS190 propels a 2.0-g (31 grain) bullet at a muzzle velocity of roughly 715 m/s (2,350 ft/s). It has a steel penetrator and an aluminum core.[40] The SS190 has been manufactured with a plain, black, or black-on-white tip color.[15][41][42] It is classified by the ATF as armor-piercing (AP) ammunition, and its sale is currently restricted by FN to military and law enforcement customers.[15][24] In testing done by Houston Police Department SWAT, the SS190 fired from the P90 into bare ballistic gelatin exhibited penetration depths ranging from 28 to 34 cm (11 to 13.5 in).[21] In testing in 1999 by the Royal Canadian Mounted Police (RCMP), the SS190 fired from the P90 at a distance of 25 m (27 yd) exhibited an average penetration depth of 25 cm (9.85 in) in ballistic gelatin after passing through a Level II kevlar vest.[38]

This is from another section of wiki. ( http://en.wikipedia.org/wiki/FN_5.7%C3%9728mm )

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.