New Primary Weapon Systems MK107 MOD 2-M 300 Blackout SBR
Primary Weapon Systems has released the MK107 MOD 2-M, a short-barreled rifle in .300 Blackout that weighs 5.2 pounds complete. The rifle features a 7.75-inch barrel with a 1:5 twist rate, machined from 416 stainless steel. According to PWS, the barrel is designed to deliver accuracy with heavy-g...