Just received my AA S510 carbine in .22 walnut, and it is a shooter, for sure. Non-regulated, which apparently doesn't make any difference with the number of shots available nor accuracy. The tube fills to 190cc and the gauge has barely moved after five magazines of sighting in and just have fun punching hole in the target at 30 yds. I am impressed with how quiet the stock shroud system is. Very backyard friendly. I ordered a DonnyFL twin mail adapter anyway, since I have a couple of moderators I want to try out. Easily as accurate as my Daystate, and much lighter. Love it.
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