Super quiet, no kick, very accurate...what more could you ask for?
As far as upgrades (Im assuming this thing is completely stock)
-Hater MI chip
-Hater Lucky board
-Laser eyes
-aftermarket trigger (I like the CP roller)
-UL frame if you really want to
-Orange bolt
Thats about it really, but none are really required...plus, thats just personal preferrence, theres a few other options...
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ER Tech by day, EMT by night.
Trained to SAVE your a**, not KISS it.