Got these for the new ECHO 1 Wolverine.
They feel really cheap. When you hit them together they make a terrible plastic clack. Don't do anything until you lube them.
Here's my step by step procedure for these. Unpackage them, lube, feed about 40 BBs, unload, feed 70 BBs, unload, feed 110 BBs, unload. Sfter this they work fine. Until the spring gets completely broken in you may experience some double feeding but it will get better. Great mags.
5 mags for a great price
Work fine in my ECHO1 Wolverine
Won't do anything until you lube them
Rating: [5 of 5 Stars!]