THIS IS THE CO2 BULB SEAL THAT IS USUALLY FIRST TO GO ON ANY PISTOL,
FITS THESE PISTOLS AND ANY OTHER PISTOL WHICH USES THE SAME 10MM BRASS COLLAR AS SHOWN IN PICTURES .OLD SEAL IS USUALLY CLEAR OR WHITE.. 

px4 storm
GLOCK 17 GEN4
P08 BLOWBACK,NOT FIXED.
COMMANDER  
H&K45 ,USP
CP99 COMPACT
COLT 1911 SPECIAL COMBAT CLASSIC
BERETTA PX4 STORM
PPK
PPK/S  
BERETTA M92A1
BERETTA M93   
                                                     LISTING IS FOR TWO SEALS..

                                                ALL SEALS MADE IN UK WITH TOP QUALITY POLYURETHANE!