I purchased a SL-9 KAK Industries 10" upper from Hoffman Tactical..I've been using is for about a year with the SL-9 Super Lower w/Super Safety with absolutely no issues. I recently decided to upgrade to a Spikes Tactical ar9 lower using Colt mags. I am having issues with getting the magazines to seat and getting the bolt to completely seat on the round. I have to admit I'm not super knowledgeable about the AR-9 platform. I've modified the weight in the bolt to work with the SS. Does anyone have any ideas why this isn't working correctly? Here is a picture of how I modified the KAK weight in the bolt.
Any advice would be greatly appreciated.
