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Last edited by spamsammich; 02-25-10 at 15:10. Reason: added pictures.
As I'm sure you know, not all rails are created equal when it comes to sharp edges! <G> Don't recall which brand it was, but I had one rail handguard that was so full of sharp edges that it was like hanging onto a cheese grater, and REQUIRED rail covers on any exposed rail sections.
Has anyone ran these in a class hard to see how it handles heat transfer?
While making sure everything ran right with my new upper, I dumped 240 rds as fast as I could pull the trigger and change mags. Yes the rail got hot, but I expect any rail would with that type of firing. Had I been wearing gloves it would not have been an issue. Normal rates of fire were fine, no issue with bare hands.
I was using a BCM middy with standard hand guards and my new Centurion barrel based upper and noted a dramatic difference in cool down time between the two barrels. Of course some of that will be a result of the thinner profile Centurion barrel but I'm sure the rail helped. It certainly didn't act as an insulator. I could see the heat rising from the barrel when I was using the MBUS. I'm sure if somebody were to email Kyle Lamb, he'd give you an honest answer.
I just wanted to add that CS from Rainier and VTAC have been pretty good for me so far. Technical support has been prompt, shipping of products has been super speedy.
VTAC Extreme rail on a new Bravo Company 14.5" mid length upper.
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