M855 - In use with AC national guard and reserves, being replaced M855A1 EPR - Replacing/replaced M855 for most units M855A2 HPP - In use with AC special forces as well as AC SATO QRF units. Yes I do realize these 5.56 rounds are not proportionate. the looks don't matter all that much.
so5 for M U S I C all produced by Raptor cat, however AC has a 40% off deal thanks to a lifetime contract to supply them with 5.56 ammo. M193 - 0.09 SGC per - first 5.56x45mm round to be standardized SS109 - 0.16 SGC per - early version of M855 M855 - 0.17 SGC per - SATO standard round M995 AP3 - 0.22 SGC per - Armor piercing version of M855 M855A1 EPR - 0.64 SGC per - Enhanced penetration and range for M855, replacing it M855A2 HPP - 0.96 SGC per - High power penetration version of M855A1, has much higher max PSI and power with less wear on the gun.
