I've got a Stribog SP9A1 that I absolutely love and I'm considering SBRing. I was dead set on doing that when I first got it but the SBA3 was surprisingly comfortable so I haven't. The benefit of it being a pistol is that I can take it across state lines (going to see my friend who lives in West Virginia often), have it loaded in the vehicle with me, etc but were it an SBR, it would be more comfortable to shoot but that's all. I have the form 1 kit from the BATFE on my end table but it's a lot of work for what doesn't seem like a huge improvement. What do you think?