I'm waiting for the stamp to come in on both my Sparrow and Optimus. I'm 6 months in. I bought the Victory this summer and planned on using it as a host for the sparrow due to ease of takedown. The takedown screw backs out unless I use a bit of blue locktite to keep it in its place. It eats all the ammo it's been fed from CCI stingers to Remington thunderbolts without complaint. I shoot my mark III (no threads) much better than the victory so I should have waited for the soon to be released mark IV with a threaded barrel. I'll probably buy one anyway. I need a threaded barrel for the 10/22 if anyone as any recommendations.