King Arms SIG556 Shorty Blowback AEG 500rd You can choose to utilize

You can choose to utilize just the bottom portion of TRAX 2 and leave the gas block exposed or connect the top portion to complete the entire section

Umarex H&K HK45 GBB Pistol

Magpul GBB UBR® Collapsible Stock (Black)

A Brighter [ Fiber-Optic front sight ] will also help the shooter acquire the front sight and focus on it easier and faster

- strong recoil kit

King Arms SIG556 Shorty Blowback AEG 500rd You can choose to utilizeTactical RAS Railed HOLO Handguard for 556 Shorty 7mm Bearing Gear Box with Brand New Designed Bolt Carrier Operating Mechanism One Piece Metal Outer Barrel Ambidextrous Selector Railed Flat Top for scope and red dot sight Stylish Flip Up Front Sight & Low Profile Flip Up Rear Sight 135 Rounds SIG556 Nylon Fiber Magazine (Also compatible with M4 M16 Magazine) Compatible to Other Brands Reinforce Parts (Except the Piston & Nozzle) Trademark of SAN,