Quote:
Originally Posted by MTC(SS)Ret
Just thinkin out loud here about the subject and wondering if anyone has any thought or experience with an AR pistol with the arm brace in 300 Blackout, subsonic ammo with a suppressor?
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Yes...
With subsonic ammo, the .300BLK is basically a pointy .45ACP. Similar muzzle energy, better ballistics and penetration because of the bullet shape.
In an AR platform, it's easy to shoot: low recoil, low muzzle blast, and you have 30 rounds in a mag. Suppressed, it's very quiet, easily hearing safe.
It is going to penetrate more than a handgun caliber, especially with most commercial loadings. There are a number of videos on YT that show .300BLK subs defeating soft body armor.
For
home defense I would choose an AR platform in 9mm over .300BLK, mostly due to the commercially available defensive ammo in 9mm being better suited to that task.