I shoot a gamo package scope , works well. Of course it took 3 and some scotch tape to make one " useable" but it is .
Tape to hold the power ring still from recoil (turns clockwise as you shoot)
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On the gun
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50y (177. Cphp)
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Only complaints with gamo is there stick in the mud attitude toward end-user parts or maintenance stuff . Pretty selfish and near non-existent. My whisper fusion mach 1 shoots as good as my hw .. saddly after 5 hard shooting years i cant get a simple piston seal for it here in the usa ..