Brethren Arms MP5 in .300 Blackout (Teaser)
This teaser from Forgotten Weapons showcases the Brethren Arms MP5 variant chambered in .300 Blackout. Expert Ian McCollum highlights its unique features, including AR-15 magazine compatibility and suppressed operation, noting its potential to redefine firearm categories. The build quality and controllability are emphasized, suggesting a glimpse into the future of firearm design.









