Captain O-Ring Firearms & Hunting O-Ring Manuals

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Note:  Guides must be printed at "Actual Size" in order for printed o-ring sizing to be accurate.

Air Venturi

Avenger (.177, .22, .25)

American Air Arms Rebuild Guides

Slayer .357

American Tactical (Nova)

Nova Liberty (.177 & .22)

Crosman Rebuild Guides

​Benjamin 392, 397, C9, CB9 (1995-2016)
Benjamin Airbow
Benjamin Armada .22 BTAP22MX
​Benjamin AS392T
Benjamin Discovery BP1K77/BP9M22
Benjamin Marauder BP1763/1764 & BP2263/2264
Benjamin Marauder BP2200
Benjamin Marauder BP2563/2564
Benjamin Maximus .177 & .22
Benjamin PCP Hand Pump
​Bulldog 357
​Challenger CH2009
RepeatAir Model 1077
Silhouette  1701P

FX Rebuild Guides

FX Crown (.177/.22/.25/.30)
​FX Impact (.177/.22/.25/.30)
FX Impact M3 (.177/.22/.25/.30)
​FX Maverick (.177/.22/.25/.30)
​FX Royale (.177/.22/.25)
FX Wildcat MKII (.177/.22/.25/.30)

Kalibr Rebuild Guides

Cricket / Cricket Carbine (.177/.22/.25)

Umarex Rebuild Guides

Gauntlet (.177/.22/.25)