Phase 5 has some really nice stripped carriers in stock for $150. I ordered one for a 6.8 build so it worked out that it was stripped. Just need to stake a gas key and get the small parts. Here is the link.
http://www.phase5tactical.com/produ...carrier-stripped-en-electroless-nickel-bc-en-
http://www.phase5tactical.com/produ...carrier-stripped-en-electroless-nickel-bc-en-