They do NOT chop. as you said it's boltless, so how can it chop? the trap dorr is only pressureized with 3 psi, thats not enof to even pinch your finger.
Oh asnd notice I did not mention accuracy, thats purse paint to barrel match and consistancy. The epics reg is good but it's bnot the best. a nice adjustbe tank could be used to make it better, but it would be a little bulky on such a small gun.
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