Tippmann TCR LOW SERIAL NUMBER #0000021 Chest Neck Protectors This innovative "DLS" Dual Loading 4v Small Buffer Tube This innovative "DLS" Dual Loading System utilizes a unique patent pending system that enables you to interchange your loading system with a quick turn of the barrel allowing the user to switch between a traditional upper load feed system and lower magazine feed system during play the streamlined design keeps you in the game by minimizing glancing bouncing paintballs Based on our TiPX platform of using CO2 cartridges or HPA with a remote line along with its dual feed capability gives you a marker with a ton of flexibility in how you want to play And let’s not forget its First Strike Compatible