Quoted:
I have an older mag, I think preban, have a magpul ranger plate on it..but it spits out rounds and jams all the times....should I toss the body and keep the spring and follower, and magpul? What say the hive?
Sell the mag body (if dated) to someone in a ban state. They can fix it and use it. Otherwise, you might examine the mag to find out what's wrong with it. My guess is a very worn-out spring or perhaps a dent or other problem that prevents the follower from moving up fast enough. Without taking it apart, use a ruler or other implement to push the follower all the way down, and let it rise slowly to see if it drags or stops. If it passes that, take the spring and follower out. See if the spring is as long as a new one from the same type of mag and is installed correctly. See if the follower is damaged or worn in any way, and replace it with one of the latest design. While you're at it, clean the mag. Load the mag with ten rounds. Push out one round at a time, checking after each one to see if spring tension is maintained on the follower. At the range or in another safe place, fully load the magazine, lock it in the rifle and manually pull the charging handle and release it until all rounds have been loaded and ejected, or a malfunction has occurred. If it works, reload it and test-fire.