Saber Tactical , Miami FL
Cobra Tactical , Valencia, CA.
A few more.
Senda Corp (closed)
Eagle Arms ( a division of Armalite I think)
If we aren't only looking for manufacturers of full rifles, then add 'Black Weapons Armory' here in Tucson they have their own line of upper and lower recievers with a pretty nice looking roll mark
Liberty Tactical . Wauseon, OH.
Only 32 more to go boyz!
keep it up!
Dennys Guns Kansas City MO
Oberland Arms, Germany out of business
Tactical Weapons Solutions