Charlie, I believe it to be a real Inland stock that someone added the CC to after thinking about it. The channel measured a little over 4 inches if I measured it correctly. I think I mentioned the HI in the sling well is worn much more than the CC and the OI on the handguard is similarly worn. I always appreciate opinions and advice but I didn't pay a premium price for this one so no real worries about the CC on my part.