Like a pit-bull the SWAT is compact and vicious. The first BT marker to offer the new Magazine expansion chamber as a standard feature, the MAGAZINE expansion chamber not only gives an authentic military look and feel, it also improves the efficiency of your CO2 air source by letting the liquid CO2 expand into a gas rather than potentially pushing liquid co2 through your BT-4. With the magazine expansion chamber, looks are certainly more than skin deep. The BT-4 also comes with a removable barrel system. This feature allows the user to select a barrel that is suitable for the playing conditions. Standard barrels are mirror honed with a step-bore and porting and stock length is 8 inches. Features: BT-4 at the core Magazine Expansion Chamber Raised Adjustable Sight Rail Collapsible "Car" Stock Slide away feedport Impact resistant baked on coating Selecta barrel™ adaptor allows use of multiple barrel threads Dual picatinny mounting rails meet military standard 1913 Removable grip frame Tournament legal external velocity adjustor Works with co2 or compressed air 1 year full parts and labor warranty from BT Paintball .68 Caliber Semi-Automatic CO2 or Compressed Air(HP Output) 13 BPS Aluminum main body Accuracy Range: 150+ ft
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