“I bought this AR-9 BCG for several reasons. 1) I'm a fan of the Toolcraft brand, as I already own three of their 5.56 nickel-boron BCG's. 2) Their customer service is vey responsive if there is a problem. 3) This AR-9 BCG has the AR15 style extractor, which makes it easier to clean and replace. The old style BCG I had, has a fixed extractor which is just a bent piece of metal, with no spring. Expensive to replace too. Lastly, the ArmorAlly price was the best I found.”
“Installed in Spikes colt mag lower and Spikes 9mm upper. Works flawless, might have to bend the ejector protruding from the lower receiver a little bit to make good contact with the case during ejecting. Works well with my Franklin Armory binary trigger. I can run it as fast as I want without issue. Overall solid product at great price.”