Real Deal GBB Fill Valve Small

Tired Of Gas leaking out of your Magazine and you don't want to buy a new valve? 

⁍ Pack of 5

⁍ 70 Durometer Buna-N O ring. Slightly harder than most stock o rings aimed at a longer life span. 

⁍ Replaces old O - Ring. 

⁍ It is recommended to keep all GBB o rings lubricated with a silicon oil / grease.  

 The fill port is  avery common place for air leaks to occur due to damage caused from filling with a metal propane adapter / green gas can. Lack of lubrication is another issue that leads to the o rings drying out, deforming, and sometimes cracking. Repair up to 5 magazines with just this one pack !