Mark Posted June 13, 2012 Share Posted June 13, 2012 I just attempted to install a Briley 8 round extension tube on my SBEII and all went well except.... The tune does not full lock fore-end stock on the gun. I have an eighth inch or less of movement with stock. Disappointed to say the least. I am not sure if I did something wrong, but everything is locked down tight except the stock. Anyone have this issue? Any solutions? Thnx Quote Link to comment Share on other sites More sharing options...
truckcop Posted June 13, 2012 Share Posted June 13, 2012 (edited) If you removed the forearm washers from the front of the forearm, make sure they are reinstalled in the forearm behind the barrel's guide ring, not between the front of the guide ring and back of the magazine cap portion of the extension. There should be two flat washers on either side of another washer that looks bent. Holding them in place are a clip-type washer that fits into grooves in the forearm.The only other thing I've seen on aftermarket extensions is the threads on the cap not being deep enough to fully seat the extension on the barrel ring. But, that also allows the barrel to move as well as the forearm. If the barrel is tight, the only other thing that would make the difference is that forearm washer/washers being in the wrong place or missing altogether. Edited June 13, 2012 by truckcop Quote Link to comment Share on other sites More sharing options...
Mark Posted June 13, 2012 Author Share Posted June 13, 2012 Thanks for the input. I figured it out and it was definitely operator error. Everything is rock solid now. Quote Link to comment Share on other sites More sharing options...
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