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TPM001 · December 1st, 2011, 14:23

I will add this to kullwarrior's great list on open bolt GBBRs:

Always keep the nozzle o-ring well lubed with silicon oil. It is imperative that the nozzle moves freely within the bolt carrier (though it is normal for nozzle to stick in the hop up chamber while the carrier pulls back until the nozzle spring works to pull it out). In my experience, 90% of all jams and misfeeds are caused because the nozzle movement can't keep up with the bolt carrier as it cycles.

Every 10 mags, I take out the bolt and add a few drops of oil on the O-ring. Then slam it back in and you're good to go for another 10 mags. It's a 20 second exercise that will save you a lot of headache.

Don't use too light of an oil. I find the oil that comes with KWA guns to be the perfect viscosity. It's a bit thicker than grenade oil.

December 1st, 2011, 14:23	#40
TPM001 Trader rating Join Date: May 2011	I will add this to kullwarrior's great list on open bolt GBBRs: Always keep the nozzle o-ring well lubed with silicon oil. It is imperative that the nozzle moves freely within the bolt carrier (though it is normal for nozzle to stick in the hop up chamber while the carrier pulls back until the nozzle spring works to pull it out). In my experience, 90% of all jams and misfeeds are caused because the nozzle movement can't keep up with the bolt carrier as it cycles. Every 10 mags, I take out the bolt and add a few drops of oil on the O-ring. Then slam it back in and you're good to go for another 10 mags. It's a 20 second exercise that will save you a lot of headache. Don't use too light of an oil. I find the oil that comes with KWA guns to be the perfect viscosity. It's a bit thicker than grenade oil. Last edited by TPM001; December 1st, 2011 at 14:27..