Hi Nick and welcome. No, the FN 5.7×28mm (designated as the 5.7×28 by the C.I.P. and FN 5.7x28mm NATO) is a small-caliber, high-velocity, smokeless-powder, rebated, bottleneck, centerfire cartridge designed for pistols and personal defense weapons (PDW) uses. It is higher velocity than a 22 even is shorter pistol barrels. Cheers and stay safe!

FN 5.7x28mm NATO) is a small-caliber, high-velocity, smokeless-powder, rebated, bottleneck, centerfire cartridge designed for pistols and personal defense weapons (PDW) uses, manufactured by FN Herstal. It is similar in length to the . 22 WMR and . 22 Hornet.

no it is not beefed up 22 it is a 5.7 mm centerfire cartridge performance is comparable to a 22TCM