I believe the Bulltrigg does that.......
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My prize VSR-10
Base GunTokyo Marui VSR-10 G-SPEC
Power SystemOld Style Wolverine Bolt
Power System UpgradesAirsaver spring with 2 shims
CylinderWolverine Aluminum Cylinder
BarrelAirsoft Philosopher 6.04X475mm
BuckingAirsoft Philosopher 40º
ChamberAirsoft Philosopher CNC Chamber
Barrel Spacers10 Spacers Made Of Solid Masking Tape
Mag ReleaseAngel Custom (its really good!!!)
BananananananananaSpartan Doctrine 40mmX335mm With Special Cream
BatteryTitan Power 7.4V X 350mah HPA Battrey
BBsBLS .45, BLS .48, Novritsch .46
DIY Mods
Stock Filled With Old Socks, Leather, Tape and Foam, Cylinder To Barrel Guide Sleeve Made Of A Seltzer Bottle, Dust Cover Made Of An Arizona Can, Short Stroked Cylinder, 90º Airline Fitting, 1/4 Extra Strong Airline
Future Upgrades
Homemade 5,000PSI Airstock, Carbon Fiber Outer Barrel, AirsoftPro Receiver, Maple Leaf Bolt Handle, Palmer's Pursuit Dual Regulators, First Strike First Stage Regulator, IER-Hop, Delrin Cylinder Sleeve, And A Possible Skeleton Stock Sort Of Like Plazmaburn's VSR-X
Where you can see my projects and related pictures
https://www.instagram.com/silicone_sword/?hl=en