Introducing the Mayo Gang MGC4 MK4 MWS GBBR Gas Blowback Airsoft Rifle

The highly anticipated Mayo Gang MGC4 MK4 Gas version is here! Building on the overwhelming demand from the #mayogang community and the success of previous models, Airsoft GI is proud to finally unveil a project several years in the making: our own Gas Blowback Rifle! The MK4 combines the proven billet receiver and beloved MWS gas system with new upgrades for even more precision, performance, and flair.

Next-Level Design and Functionality

The new 10.5-inch M-LOK handguard and included metal mock suppressor give the MGC4 MK4 a refined, aggressive look that’s ready for any loadout. The addition of a Top Down Center (TDC) hop-up chamber allows for more precise tuning of your shots, ensuring consistent accuracy shot after shot. Combined with ambidextrous controls and a comfortable new NSR stock, this rifle delivers the perfect balance of style and practicality.

Performance Upgrades that Deliver

Inside, the MGC4 MK4 continues the legacy of high-end performance. Featuring full steel components making up its trigger assembly and new and improved valves and seals for its magazines, the MK4 GBBR is a field-ready primary that requires no upgrades in order to be competing amongst the top customs on the market.

MILSIM Ready

The Mayo Gang MGC4 MK4 MWS GBBR is a great pick for the MILSIM community largely because its handguard is as versatile as it is tactical—featuring seven M-LOK mounting sides toward the front so you can run lights, grips, or other mission-critical gear exactly where you want. It also includes two QD sling attachment points (one on each side of the rail), giving you flexible sling options for fast transitions and modular load-outs. The choice to revert to a forged-style receiver set rather than a more stylized Billet aesthetic really helps it blend into the realistic aesthetic many MILSIM players demand. All in all, this GBBR balances practical accessory capability with a look and feel that fits straight into a serious, realism-driven scenario.

The Ultimate Rifle for the #MayoGang

The MGC4 MK4 is not just an airsoft gun — it’s a community icon reborn. Whether you’re running it on outdoor fields or dominating CQB matches, this rifle gives you the performance edge and unique look that defines the Mayo Gang legacy. Don’t miss your chance to own this limited collaboration that blends innovation, reliability, and style.

Please Note: BB's and gas are NOT included. A speedloader is recommended for the magazine.

Please Note: Accessories shown willNOT be included. Final product may differ from mock up image.