I have to admit, an AR-type SBR in .40 S&W that accepts Glock magazines is on my must-own-before-I-die gun list. This may be a prototype but I hope they go through with it.
It’s getting harder and harder to sell people on .40 S&W for handguns as the performance of 9mm ammo improves, but recoil isn’t an issue with ARs and with a 10-inch or even a 7-inch barrel .40 S&W really picks up a lot of speed.
It’s not like 9mm doesn’t improve either. It’s really a wonder why more companies aren’t making pistol-caliber ARs that are designed to use Glock mags.
If you’re at all interested in Glocks, you ought to check out Lone Wolf Distributors.