Bought this kit a couple weeks ago with an assortment of internals to upgrade my Echo1 G36c. After opening the package from airsoftgi, I noticed that all my parts were wet and slimy. I pulled all the parts out of the box and noticed the "air seal grease" was leaking. The cap was not secured, thus making everything I ordered all greasy. (Airsoftgi had a new one shipped out in 24hrs.) Even the second bottle I received, the cap was secured with scotch tape... this must be a reoccurring problem. To my surprise, none of the bottles came labeled as shown in the picture either. I had to refer back to airsoftgi to see which grease was intended for which part. Also, the spray nozzle on both bottles of air seal grease is not functional. The grease seems to be entirely to thick to pass through it. A pointless feature if you ask me.
Thus far the grease appears to be doing its job, but I probably wont buy it again.
Appears to be working as it should.
Useless spray nozzle
Product came unlabeled.
Rating: [3 of 5 Stars!]