![ULTIMATE Piston Head O-Rings - Pack of 5](http://airsofteire.com/cdn/shop/products/dc48bb0dd726b3c4cf13417eea70819e_512x386.jpg?v=1534181464)
ULTIMATE Piston Head O-Rings - Pack of 5
ASG
€9.99
These are not typical piston head o-rings. They feature a grove on the inner edge of the o-ring which helps expand and create excellent compressio...
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