Dye Barrel Thread Carrier
Dye has released some silent upgrades to their Dam product line, one of them is the Dam Threaded Barrel carrier. Dye set out to correct a known issue regarding velocity, and the way they corrected this was by milling out a slot in the barrel carrier, so that they could place a 019BN70 o-ring in front of the eyepipe. This greatly improved the transfer of forced air behind the ball, and stemmed the loss of air that would otherwise escape as the ball was propelled.
Dye Engineer, Billy Wing, also noted that an alternative to this for those who do not have access to this mod is to drop a 018 o-ring in a non modified barrel carrier, as it will yield similar results, however, turning the eyepipe wont be as easy. A little grease will help out with the rotation (But who uses the rotating eyepipe, anyways)
Dye's new upgraded barrel carrier boasts approx 20-25 FPS increases, and their findings can be found in the chart pictured below.
The new updated barrel carrier runs for approx $15 USD, and can be bought from the link below