For a large platform carry handle there is this :https://www.rockriverarms.com/index.cfm?fuseaction=category.display&category_id=411&CFID=566377296&CFTOKEN=14471702
Welcome from Indiana brother. Just remember that in the .308 platform there aren't the standards like in the smaller 5.56 platform. Mixing parts and systems requires doing your homework so that your rifle will work without issue.