Thanks, DeRico, but I'm looking for info on SBRs.

^ This right here and what JG stated above!

No worries, SBR’s are great too. I own one and don’t use it for home defense.

I had one in .300blk suppressed and I tell you that I’d choose my pistol first rather than my SBR.

Enough ranting, I’d recommend 8”-10.5”, 5.56mm 62gr green tip or 77gr OTM(for the 10.5”). I know it’s expensive but the Surefire RC3 would be the best option for suppressor, next in line would be the Dead Air Sierra 5. Both are lightweight.

Personally I'd trust a light, short, carbine with good terminal ballistics like a 5.56 or 300blk SBR over something that I'm likely to short shuck in the heat of the moment. And also, since I'm accountable for every bullet that leaves the gun, I'm not keen on wide spread, low cap, high recoiling shotguns.

The 5.56 will blow through your walls and possibly into your neighbors. With a center fire rifle cartridge you have to be precise in your aim. Shotgun, not so much plus you get the knock down punch factor.

If you live in a city with other houses nearby, I would be concerned about 300 Hammering a baby in another house. Sheetrock won’t do much to stop hog blaster SBR’s most folks have. If you live in the country, disregard.

1. What is the typical drywall penetration of a 12ga 00 - #4 buckshot vs 5.56?
2. Do you think you don't have to aim with a shotgun? What happens to pellets that don't hit your target? I think your answer might change after you read about #1.

Again, I must stress, you are responsible for every bullet that leaves your gun. A wide spread is not something your neighbors would appreciate.

If it helps: 12ga flitecontrol at 6:20, AR starts at 7:20. As always ammunition choice matters a lot, but 5.56 tends to yaw and break apart after a couple layers of drywall. Pay attention to the VMAX and 77gr loads especially.

1. YouTube video...take that with a grain of salt.
2. I never said you don't have to aim with a shotgun, just don't have be a precise as I would have to be with a 5.56 rifle. How many times do you have to fire the 5.56 to stop the the threat? Shotgun is probably going to knock the perp on his arse after the first "well placed" shot.

I've done two now, and am happy with both. The first is a 12" barrel 5.56mm, no suppressor, using Palmetto State parts. That's just plain fun to shoot and makes a damn good truck gun.

The second is an 8" barrel, 45acp (because I like 45acp . . . a LOT), built on CMMG parts. Uses Glock magazines. Waiting on my Rugged Obsidian suppressor to get approved for it. This is intended as a home defense gun, as I'm not worried about 45 going through the brick walls into neighbors homes.