Selling a custom built Krytac PDW built m4. Top tier performance right out of the box and unmatched reliability as expected by KRYTAC. Durable and beautiful external build with an upgraded gearbox . An amazing rifle for both CQB and far range engagements! Far range, tight grouping, snappy trigger response , programmable mosfet system, fast rate of fire. Clocking in at 350 fps. This gun is a absolute beast on the field SPEC & Upgrades - Installed 6.02 Tightbore inner barrel mod with new bucking. Increasing range, accuracy & FPS - Clocks in at 350 fps -Krytac billet style Aluminum alloy receivers -Stamped Krytac trademarks -Licensed defiance tr105 Keymod rail system -8mm ball bearing bushing gearbox with inline MOSFET -Ambidextrous fire selector and realistic locking bolt and bolt release - Added M4 buffer tube to fit M4 style adjustable stocks Package includes: - KRYTAC M4 with upgrades - High capacity 450 round magazines - Two point sling - Vertical for-grip - Adjustable crane stock - FPS spring mod (if requested) Additional magazines, Optics, accessories, & suppressor pictured to show parts compatibility & available for sale separately and are not included