Webley 12 PCP Air Rifles Replacement Pressure Burst Disc, x 4 Discs Pressure burst discs are built into your gun to prevent over-pressurising your PCP airgun This disc sits under the block screw or on side of cylinder and is an overpressure safety device designed to break If the rifle is over filled this will burst and needs to be replaced or the rifle will constantly leak These leak over time and need to be replaced webley mastiff webley raider 12 webley eclipse webley enforcer does not fit webley raider 12 classic
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