Veterans MFG® F.A.S.T. Helmet vs The 5.7×28 mm round shot from the PS90 Carbine. by The Editor February 24, 2021 0 Veterans MFG® F.A.S.T. Helmet vs The 5.7x28 mm round shot from the PS90 Carbine. To shop this and many more products please visit vetsmfg.com. source