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Due to the lack of NPASs being available I thought I would try the o-ring thing on my open bolt 416. I found an o-ring the same diameter as the floating valve. I washed both the valve and the oring with brake kleen so there was no oil or silicone on them. With the nossle standing upright I put two drops of medium thickness CA glue on it and then placed the o-ring on and gave it a turn to evenly distribute the glue. After a five minute dry time I assembled everthing and gave it a try. Before the gun shot a solid 420 with .20 bbs. now with the o-ring in place it shoots 348 - 354. I will probably never buy another NPAS for my WE open bolts. Whoever came up with this tip needs to have a beer or two bought for him, it definitely does what it needs to.
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