I'd love to hear thoughts on which 9x19 rifle to get. I see this gun filling two possible niches: First, and predominantly, as a fun gun to shoot 9x19 and suppressed 147 grain sub sonic 9x19. It is more affordable subsonic shooting than the 300 Blk. I like iconic guns and while that takes a back seat for guns that primarily tools for range toys and the personal reference collection its a pro. Secondly, as a compact gun offering additional capability over a duty sized handgun, but filing a different niche from the 7.62x39, 5.56, and 300 Blk SBRs available to me. This includes suppressed shooting. To be used from 0-150 yards or so. Categories that weigh into it: Proven design and quality gun: Since this will become an SBR and part fo the push is to get a stamp in before the trust changes take effect having the thing work right is at an even higher premium than normal. Small and light: The second use of being a useful intermediate option between a full size handgun and a 10.5" AR isn't really achieved by a gun that's the same size or bigger than a 10.5" AR or an 11.5" AK w/folding stock. Folding or collapsible stocks are a plus here too. I have really come to appreciate them for storing or transporting SBRs. Shooting suppressed: I would like to be able to use a couple of Octane suppressors on the gun. One in .45 and one in 9x19. 922r: Many of the pistols that would make a great base for an SBR are able to be imported simply because the are pistols. The ATF had most recently opined that 922r applies to SBRs. I think a fair reading of the law supports that position (that's not to say it isn't a really stupid law). As such 922r is a factor in the decision. It is a factor in terms of whether compliance parts will be required, their cost, and their availability. Cost: I'm not filthy rich and as such cost is always a factor. It is even more of a factor given that I am trying to beat the deadline for the trust changes and would like to get as many NFA items as possible prior to those change. I plan to buy a .30 Cal suppressor and so that wraps up about $1k. I have a couple items I already own I'd like to submit forms on too. RDS Attachment: I'd like to put an aimpoint micro on it. Other: Other important factors I'm failing to think of right now. The contenders and the perceived pros and cons: Uzi Pros: Cost ($600) Iconic Ease of SBRing. Just requires a stamp and a barrel swap Cons: The design is proven but I'd get a UC 9 which although most reviews seem positive, it is Century. Its not small or light. It is bigger and heavier than my folding stock AK MP5 (I'm looking at a POF reverse stretch) Pros: Iconic (although a purist would call me out on the reverse stretch) Proven design Should shoot well suppressed and comes threaded and with with Relatively compact Cons: Expensive. The base price is $1500 and it requires 922r compliance parts. Mags seem to run $30 for POF and up to $70 for real deal HK mags. I'm yet to use a MP5 with a red dot set up that I like. Lacks the ergonomics and modern features of some of the other options. MPX Gen 2 Pros: AR style controls Keymod hand guard Caliber conversion capability Ease of mounting a red dot Cons: Gas to the face when shooting suppressed seems to be a real issue. Although its Gen 2, sig has had issues in releasing new guns lately Mags are absurdly expensive Its not real cheap at $1300 and about $200 for a stock (but it is less than the MP5) Uzi Pro Pros One of the smallest and lightest options Mags are reasonably priced RDS easy to mount Cons I haven't found any 922r parts so this may be a total no starter It might be just about as useful with just a brace Barrel isn't threaded. TMP Pros Small and light Cons Price Availability 922r parts? Suppressor compatability(?) Scorpion Pros Affordable at under $800 and $200 for stock and compliance parts Mags are affordable. Seems to have less gas in the face than the MPX Cons I'd rather have a gen 2 than gen 1 Availability Trigger is said to be less than stellar Full Auto Mac Pros: Its a real sub gun Lage slow fire upper makes it a pretty useful tool Can mount folding stocks and RDS Can shoot suppressed Can do a .22LR lage upper Cons Price Finding one for sale that I can get pending in time. Price Kriss V I haven't seen the 9x19 version and haven't given the 45 a hard look but would be interested in hearing input on it Keep in mind I'm going to build out the 9x19 AR at some point. I have a sub 2000. I have other SBRs in real rifle calibers .