There are arguably better defensive weapons for inside the home.
It is better suited for guarding the perimeter or deterring guys coming up the driveway.
The Federal government once considered them for personal defense.
But note how they avoid the sensationalized media description.
https://beta.sam.gov/opp/09f78d7e84c745853607ecc571c0003c/viewNotice ID H92222-17-RFI-DW
Department/Ind. Agency DEPARTMENT OF DEFENSE
Sub-tier US SPECIAL OPERATIONS COMMAND (USSOCOM)
Office USSOCOM REGIONAL CONTRACTING OFFICE
Description Personal Defense Weapon System
Sources Sought The United States Special Operations Command (USSOCOM) is seeking to identify potential sources within the national technology and industrial base with the ability to provide a conversion kit for the M4A1 to create a Personal Defense Weapon (PDW) system:-Complete Kit to include upper receiver and butt stock kit
-Any tools required to complete an operational conversion
-A light and sound reducing suppressor that can be attached to the system when needed
PDW Kit specifics: The kit must be adaptable to the standard M4A1 lower receiver, any modification to the lower receiver must be reversible and nonpermanent. The kit must be in .300 Blackout (BLK) cartridge, total system weight, including the M4A1 lower in not to exceed 5.5lbs. Length with stock extended not to extend 26" length with stock collapsed or folded shall be 17" (T), 15" (O) and a height not to exceed 7.5". Weapon shall be fully functional when collapsed or folded. Kit should include a 5.56mm barrel that can be changed from .300 BLK to 5.56mm in less than 3 minutes. Accuracy shall be 3.0 MOA (T), 2.0 MOA (O) @100 yds. and 5.0 MOA (T), 3.0 MOA (O) @ 300 yds. both in .300 BLK supersonic.