This is the Magpul 30-round PMAG in 6.8 SPC for the LWRC Six8 and 6.8 SPC compatible AR builds.
Usual bomb proof glass reinforced polymer build with constant curve geometry for reliable feeding and a ribbed gripping surface with agressive front and rear grips.
Features a self lubricating anti tilt follower, USGI spec stainless steel spring and over insertion stop.