Needs lots of barrel shims - Pantheon Arms Prometheus Take-Down Kit w/Handguard For AR-15

This is a very nice system but you will need 2 barrel shim kits with this product in order to get the barrel to fix with out wobbling around. Once you have it shimmed properly it is a decent system but the locking pin could be made from a better material or design to prevent early wear out. Make sure you order a extra locking pin with your kit.