Paintball marker with split body

A paintball marker comprising:

• a barrel having a bore dimensioned to receive a frangible projectile;
• a receiver including a plurality of walls defining an interior cavity with a breech area;
• a valve arrangement configured to selectively allow flow between a supply of compressed gas and the breech area to propel the frangible projectile through the barrel;
• a front bolt movable between a first position and a second position, wherein the front bolt is configured to push the frangible projectile towards the barrel as the front bolt moves from the first position to the second position;
• a rear bolt connected to the front bolt with a linkage arm and movable between a cocked position and a firing position, wherein the rear bolt is configured to actuate the valve arrangement when the rear bolt moves from the cocked position to the firing position;
• a drive spring configured to urge the rear bolt toward the firing position;
• a firing assembly configured to selectively release the rear bolt in response to actuation of a trigger;
• and
• wherein at least one wall of the receiver is movable with respect to one or more other walls of the receiver between an open position that opens the interior cavity to expose a top portion of the front bolt and a top portion of the rear bolt for servicing the marker and a closed position that blocks access to the interior cavity.