Umarex TC68 Testing a Stronger Sear Spring

I’m having the exact Same problem with my TC68 . I used a 1100 PSi and it worked fine for about 2 full mags and then I started having the same problems as you are . I have a 850psi tank on it way to me so will test that out when it arrives. I’ve upgraded the spring which you sent me the link for but they seem to shrink a little.

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Upgrades & Modifications
T4E TC68,
Umarex TC68

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