My first Paintball pistol and I have had my eye on this one since the first time I saw it as I love Sigs so much ;) This RAP4 (Umarex) RAM X50 .43 Caliber paintball and rubber ball shooting Sig Sauer P226 copy is very much a replica and looks almost bang on to the real Sig Sauer P226 with the exception of the CO2 tube that protrudes out of the bottom of the handle just a bit. Even the barrel is large diameter for the .43 caliber rounds that it shoots. The RAM X50 has very good kick and seems to operate much like my other blowback air pistols.