Just recieved an order of brass 3.8 and 5.6mm modules from eBay seller exisitotem. The 3.8's were normal but the 5.6's have a shorter, stronger lens spring. There things are great! Way tighter than the old version. The lens is tighter and easier to focus. It's like having the external spring. I ordered thier 10pc. 5.6mm brass module pack for $15.
-Danny
-Danny