9mm Barrel with F marked FSB?

AR/M4 AR Pistols & Pistol Caliber ARs

LukeMacGillie October 18, 2006, 2:09pm 1

Anyone stock such an animal?

Snake_RAH October 18, 2006, 10:50pm 2

CMMG has an 11.5" one.

Click CMMG