BCG for AR-15 ?

[lawndoctor1]

Is there a company that offers a lightweight bolt carrier group for an AR-15 chambered in 7.62x39? My BCG weighs is at 11.2oz.

 

[ballardw]

Did you try googling lightweight bolt carrier?
I got a number of results. Price range might be important but

http://faxonfirearms.com/faxon-gunner-light-weight-bolt-carrier-group-stripped-w-gas-key

http://whiskeyarms.com/products/lbc

http://2a-arms.com/products/lightweight-bolt-carrier

https://jprifles.com/1.4.7_LMOS.php

are some

 

[lawndoctor1]

I think those BCG's are for 223/556, and not for a 7.62x39. Correct me if I'm wrong.

 

[DnPRK]

A 7.62x39 bolt will fit a light weight carrier.

Understand that a gas operated gun like the AR-15 is a balanced system where the weight of the bolt carrier group and buffer and buffer spring force balances the gas pressure provided by the gas tube. If you start messing with components weights and spring force, you may induce issues with failure to eject, failure to feed or other cycling issues.