Zbraně a náboje (Guns and Ammo) 09/2018
"Gladiator, for example, has been given new pistons, now with 4 mounting holes instead of the original 2. The aim is to reduce the consequences of rough assembly and disassembly, but in conjunction with a slightly different firing-resistant material, can be hoped for an overall longer life of this stressed part."
"The barrel block lock has also changed and now has an automatic centering."