Quoted:
I am seeking advice, looking into my first pdw size weapon for mostly defense purposes, benefits being size/weight especially when combined with a suppressor and for the wife and kids to potentially have to use. Besides which platforms are best to go after (quality and pure reliability) I want caliber advice, I dont mind getting PC sub guns, but besides being easier to use because of points of contact, where is the value in dropping 2-3k on a pistol caliber over using a 300 blk out lets say. One issue with 300 blk / 6.8 spc is ammo.. hard to find right now, I dont mind reloading in the future, but hard to start out on.
-cmmg mk47 mutant - 8/10 inch (prefer 8 inch) cmmg banshee 9mm, 45/10mm
-lwrc 45 smg (pretty pricey) lwrc 6.8 spc pistol
-Sig rattler 300 blk out, mpx k 9mm
-b&t apc10, apc9k pro, apc9 pro, ghm9 gen 2 compact 4 inch / full size 7 inch
-Noveske ghetto blaster/Q honey badger
-get a nice upper for my spare ar lower (300blk out)
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@Radiant
I'm going to throw one out of left field at you....... The B&T USW-A1. It literally is a pistol that you holster but has a stock with reasonable length of pull. It's the same weight as a SIG P229, has a red dot and weapon light from the factory.... It does everything a 9mm AR does. Mine makes hits on head sized targets well past 120 yards.
True pistols with a brace or stock are a "thing", people just don't know it yet. Moving down from the USW-A1, I'd suggest Form 1'ing a Glock with the USW-Glock chassis, if you don't want to Form 1 an SBR and do that, look at the Recoil 20/20 brace. I have all three (haven't built the USW Glock yet, don't have a spare G17 ATM) and all three will meet your needs. The Glock conversions aren't the same animal as the USW-A1 as they are more PDW sized but they easily fit in a glove box or under a coat on a single point sling. Or, in a man-bag, of course. All three seem to have similar practical accuracy (head shots past 100 yards) with the USW-A1 getting the nod for best accuracy. If you plan to shoot suppressed, the USW-A1 has MUCH better locking lug timing and has the least gas in the face and is by far quieter. The KKM match barrel in my 2020 braced G19 is much louder than my SilencerCo barrel and doesn't stabilize the slow loaded 147's I did for USPSA. The Silencerco barrel and the USW don't keyhole at all-make sure you get a barrel that suits your needs-the KKM barrel was a waste IME.
Bottom line is that you want to have "enough gun", but you have to actually have it with you when you need it. Carrying around a subgun sized PDW gets to be a drag after a while and everyone will know something is up when you carry a bag large enough to hold one. The braced handguns get the job done and you will actually have it on you when you need it. Ergonomically they aren't equal to a 9mm AR, but the tradeoff is definitely worth it.... I can put the USW in a little maxpedition "Neatfreak" pouch with 5 or 6 30 round mags and the only giveaway is that it's heavy for it's size when someone picks it up. Just looks like someone's IFAK pouch.