New to P&S. Apologies if this is a duplicate post. Searched for similar topics but couldn't find anything. I'm curious if folks on the board here have an opinion on steel buffer tubes. V7 for example makes one: http://www.tacticallink.com/V-Seven...rbine-Buffer-Tube-Receiver-Extension-SBT.html Kind of an interesting idea. It's significantly heavier, but at the end we're talking 10oz total vs 4-6oz on aluminum buffer tubes. So 1/3 of a pound or so? They're also significantly more expensive, but I'm not really concerned with that part. Hive mind?