SEE THIS RIFLE BE BUILT AND SHOT: https://youtu.be/YDTIKHL2nRI Fully custom refurbished Tippmann M4 HPA Blowback M4 built by Private Caboose Airsoft (YT) Refurbished meaning the upper and lower receiver have been sent in to G.I. Sportz and have been updated with new Version 2 internals. Red dot sight is the only “used” accessory, everything is is brand new besides the refurbished Tippmann body. Upgrade Parts List: 240mm S-hopped 6.05mm Tight Bore Inner Barrel G&G Green Flathopped Bucking Tippmann Top Dead Center Hopup Nub Buffer Tube Spacer - Short Stroked Recoil Spring for Faster ROF Accessory List: EMG Guardian Mock Suppressor BCM GUNFIGHTER™ Vertical Grip Mod 3  PTS Licensed Centurion Arms CMR Handguard 2MOA Micro Red Dot Sight 1x25mm Feyachi FL22-MB Tactical Flashlight 1200 Lumen ICS High Speed Retractable Stock