As the topic asks, are all of the COLT buffer tubes 4 position? I just picked up a COLT LE6920 M4A1 Carbine marked lower for my BLOCK II and the 4 position tube is OK with the LE stock but once I put my SOPMOD on, the first position has the stock a little father back than I like it due to the butt pad etc.
I want to keep it all COLT parts if possible but I'm not seeing any COLT 6 position tubes anywhere.
Option two might just be to buy an LMT tube.


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