Another SBR to show off... I bought this Scorpion EVO over a year and a half ago as a pistol, and immediately submitted a Form 1 which was approved, oh, about this time last year.
It's been a pretty busy year for me so I didn't get around to ordering the stock for this until a week ago, when I found that Yeti Wurks was selling them for a bit less than full price.
I swapped out the factory grip for a Yeti Wurks Switchback, which is mostly OK, and the magazine catch is one from Gear Head Works. It wasn't drop-in and I needed to remove a little metal from the catch surface to make it work 100%. Right side safety delete from I don't remember who, and the CZ custom 4 piece trigger group. Barrel was re-threaded 1/2-28 locally, and the can is my SiCo Octane 45HD with their 1/2-28 direct thread end cap.
A word about the CZ Custom trigger... I don't recommend buying it, and certainly not unless you plan to send off your trigger housing for their installation service, which seems to be required to get anywhere near the trigger pull they advertise (also, they used to advertise a lower pull weight than they currently do). It's not a drop in unit, requires some metal removal in order for the safety to engage, and OBTW it doesn't include any installation instructions. The end result is a mediocre trigger, which while still being better in every way, shape, and form than the HORRID factory trigger, is nowhere near as good as what you should get for the price (or what they lead you to expect). About the only thing it really has going for it is that you get 4 US parts for 922r purposes in one fell swoop. Ends up costing over $250 because you have to buy the disconnector separately.