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DP G4

# indicates number/ID from the manual

17.17mm x 1.78mm

#2: Internal Body O-Ring

     (Closest to the feedneck)

19mm x 2mm

#3: Internal body O-Ring

     (Large)

13mm x 2mm

#10: Dump Valve Plug O-Ring

     (Small)

21.95mm x 1.78mm

#11: Dump Valve Plug O-Ring

     (Large)

#71: OPR Cap/Top Housing

14mm x 1.78mm

     (Small)

#72: OPR Cap/Top Housing

20.35mm x 1.78mm

     (Large)

#71: OPR Piston O-Ring

14mm x 1.78mm

     (Large)

#76: OPR Regulator Seal O-Ring

15.6mm x 1.78mm

#78: OPR Piston O-Ring

5.29mm x 1.78mm

     (Small)

#78: OPR Velocity Adj screw

5.29mm x 1.78mm

3.69mm x 1.78mm

#58: RAPS ASA O-Ring

12.42mm x 1.78mm

#83: Barrel O-Ring

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