Tokyo Marui Model 19 Gen 4 GBB Pistol Accessory-Type_Gas Tube There are two black knobs

There are two black knobs at the top

Interchangeable gas valve

especially there are more and more many left handers in the field

20 Rds Loading Capacity Metal Magazine

Tokyo Marui Model 19 Gen 4 GBB Pistol Accessory-Type_Gas Tube There are two black knobsTokyo Marui Model 19 Gen 4 GBB Pistol Extreme well built gas blow back pistol Very loud & crispy Blow Back sound with Hi Kick Recoil Polymer Construction Recommend to take HFC134a gas for better durability. Magazine accommodate 22+1 Rounds 6mm plastic BBs Textured grip and authentic engraving on grip & slide Rail Framed Design is well known for Tactical Flashlight & Laser Sight Attachment Disassemble procedure is as the same as the real steel 4