For anyone that has an AR in 300 Blackout. I came across these in my ammo locker and being that I no longer have a 300 Blackout AR and really don't see myself getting another one, I'm selling these. It is seven PMAG 30 AR 300 B GEN M3, 300 BLK with the PMAG Ranger Plate and the Magpul Tactile Lock-Plate - Type 2 to help distinguish these mags from the 556 PMAGs especially in the dark. Will take $13 each or $90 for all shipped on my dime. I'm located in Robeline, LA and can take PayPal or several other forms as well.