9/20 ASC 308 7.62x51 Magazine Stainless Steel Back marlube and Black Follower comes with open retail packaging. A magazine block has been installed, to only allow 9 rounds in the magazine. The floor plate will have a rivet installed as well.
Due to how the magazine blocks work in these magazines. Some might have rattling sounds, when you shake the magazine. There is really no way of fixing it from rattling.
IF THE Magazine SAYS 9/20 IT MEANS IT CAN ONLY HOLD 9 ROUNDS. DO NOT FORCE MORE THEN THE NUMBER OF ROUND THAT WE LIMITED IT TOO. IT WILL CREATE A JAM OR MISS FEED.
NOTE CAN ONLY BE USED WITH AR-10 RIFLES IN 308