Shipping took longer than expected, having said that this kit has impressed me that I can overlook the shipping. The tube is on par with Colt, BCM, DD, Spikes, and Sionics. Has a nice Dry film finish inside and good anodizing on the outside. Buffer is a buffer was on spec as long with the spring. This will be my go to for Receiver Extension Assemblys, so long they don't take 5 days to ship the order.