Externals .Madbull Daniel Defense receiver set .Ranger Armory M-lok handguard QRS pistol grip Stubby full stock Magpul MBUS Pro repro sites Falkor Defense F1 Muzzle break MOE M-lok rail section w/ vertical grip Internals .Gate titan .Bore up cylinder/cylinder head/ piston head. .Shs 18:1 short stroked two teeth .Steel rack cnc aluminum piston .Asg ultimate 8mm gearbox w/window radius .Custom trigger stop .Custom ultra high torque ultra low amp draw motor .Custom cut steel 6.04 s-hop barrel .Madbull tracer compatible rotary hop up unit .G&G green bucking flat hopped Fully tuned by Pensacola Airsoft Proper shimming of gears, AOE correction, proper lubrication of gears, cylinder, piston head and nozzle, Teflon tape seals on cylinder head and bucking to barrel, extra strong spring on barrel for minimizing hop-up movement improving shot to shot consistency . Set up for dmr right @ 450 Fps Currently Semi locked. $700 shipped