I had put together a cheap truck gun last week that I wouldn't lose too much sleep over if it turned up missing for whatever reason, PSA 11.5 upper in 5.56 ,so it's a pistol , already had a lower pistol in 300blkout so just robbed that lower for now . So went to the range yesterday to test it for function , no problems , probably 60rds down range , used a Vortex spark red dot , New out of the box ,zeroed no adjustment at 25yrds ,that never happens for me , so we back up to 100 yds and I can't believe how hard it is to focus on the red site- in target , but squeeze off 5 rounds and had to walk down range to ck target because I forgot my spotting scope ,damn 6 inch group 4 inch high and 3 inch right , now I can see why Crooks missed his kill shot , all those other bodies behind Trump would have been a big problem for him to focus on Trump , I ended up sticking a black shoot n see 6 inch target on the red site in target and adjusted the optic and was able to shrink the group to 3 inch at 100 after some practice , of course this is with a 11 .5 inch pistol and not a quality barrel , but it does have a jewel trigger. I doubt I would ever need to engage anyone at 100yrds with the gun , if I'm that far away I'll just get away but it's nice to know you can if you have to .