The Surefire Optimized Bolt Carrier has been seen on YouTube and a few other places since 2016 and is apparently ready for commercial sale. Has anyone tried one yet?
Surefire says the OBC was designed by Jim Sullivan. Sullivan was one of the Armalite people back in the day.
The OBC uses a short buffer and an abbreviated gas key. This gives the carrier a quarter inch or so more travel. This extra travel gives the magazine more time to position the cartridge for feeding. Also the OBC has a spring-loaded counterweight in the carrier itself. This is supposed to delay unlocking and also "balance" the reciprocating mass and eliminate bolt bounce.
I like the theory of the OBC and am eager to give it a try. With that said, the $450 sticker price is pretty frightening. Too bad the package isn't priced somewhere around the $300 mark. Maybe $350.
https://www.surefire.com/optimized-b...oup-556mm.html
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