Primo in the Philippines built a custom ZM LR300 Gas Blowback Rifle in 2011, following in his footsteps is Explosive Enterprises who embark to make one as well... "A VFC-based project that turned out to be somewhat more involved build than our previous AKS-74U. It uses a mix of real and airsoft brands from a half dozen manufacturers to produce a gas blowback rendition of the Z-M Weapons LR-300, popularized through games like STALKER and Rust."