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All Springer/NP/PCP Air Gun Discussion General > American/U.S. Air Gun Gates

opinions on varmint hunter hp upgrades?

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wbreslin951:
Hey every body, so here's what I'm planning to do

Following bb's tuning guide on pyramyd air, I'm going to take apart my varmint hunter hp and install the crosman nitro piston upgrade that pyramyd air sells and the grt-4g trigger. While I'm in there, are there any other parts I should replace/upgrade? What do I need to know outside of what I've learned from bbs guide? Thanks for all the input!

longhunter:
As long as you have it apart, replace the piston seal, clean and debur the cocking slot and the inside of the holes for the receiver block pins. Thoroughly clean and relube the piston with moly  paste or krytox grease.
TAKE YOUR TIME. Don't rush. And BE SAFE.

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