RMY Armament is a Chinese company. Their pistol designs, from both research and experience (I owned an ARMY R27, an MEU clone) are Tokyo Marui. Army manufactures clones of mostly TM and occasionally puts out their own design, manufactured in China quality varies massively but usually acceptable for entry level, depending on what they were cloned from parts compatibility varies with most aftermarket things working no problem however some require filing for fitment issues. I have 2 Army r85A2s which are mostly G&G clones but the electric blow back seems slightly different with replacemant hopup units and barrels they are very serviceable loaners.