Problem with BCG sticking forward when cycling

[Bret]

I recently finished putting together a lightweight mid length AR15. I have not shot it yet. I hand cycled some cartridges though it and the BCG is getting stuck. I have to pull rearward really hard on the charging handle before it will come loose. It then ejects the cartridge normally. I tried it with a different BCG and it has no problems. So, I was thinking that perhaps I need to check the headspace. I stripped the bolt and then checked the headspace. The headspace checks fine, but I experience the same sticking problem when with the headspace gauge as with a cartridge. If I use another bolt with the new carrier, there is no sticking. If I use another carrier with the bolt, it sticks, but not near as much. If I use another bolt and carrier, then there is no sticking. So basically at this point I get some sticking with the new bolt, but even more sticking with the new bolt and new carrier. Any ideas on what might be the cause?

[Iraqgunz]

Well you could start by not hand cycling rounds as that serves no purpose at all. Lube the weapon up and shoot it. Then see if there are any issues.

[IraqVet1982]

The cause is they're new, take them outback and break them in. And of course lube.

[Bret]

Well I've never experienced this issue with another AR-15, new or used. I'm just trying to reduce the chances of having a problem before I get to the range. I forgot to add that when I put the new BCG in a couple of Colts that I have, there are no issues.

[rcoodyar15]

The cause is they're new, take them outback and break them in. And of course lube.

Yeah

run it wet especially when new.