Chuck R.
Member
Hi,
Working on a new build and I’ve got a possible headspace issue with a new RCA Low Mass Competition Bolt Carrier Group and a new Larue Tactical Predatar Barrel. I tried the bolt in the barrel and checked it with a set of Clymer .223 gauges. The bolt closed and turned freely with both the go and no-go gauges inserted. Tried a Colt 6920 bolt and it would not close on the no-go gauge (as it should). This has me just a bit nervous.
For both the RCA bolt and the Colt Bolt I removed both the ejector and extractor before checking. Tests were conducted with the barrel mounted, and later removed, same results.
The Clymer NG gauge is 1.666”. According to the Q&A section on Brownell’s the Clymer .223 G/NG gauges will work for a Wylde chamber (Larue) and 5.56.
What do you think the issue is??
Thanks,
Chuck
Working on a new build and I’ve got a possible headspace issue with a new RCA Low Mass Competition Bolt Carrier Group and a new Larue Tactical Predatar Barrel. I tried the bolt in the barrel and checked it with a set of Clymer .223 gauges. The bolt closed and turned freely with both the go and no-go gauges inserted. Tried a Colt 6920 bolt and it would not close on the no-go gauge (as it should). This has me just a bit nervous.
For both the RCA bolt and the Colt Bolt I removed both the ejector and extractor before checking. Tests were conducted with the barrel mounted, and later removed, same results.
The Clymer NG gauge is 1.666”. According to the Q&A section on Brownell’s the Clymer .223 G/NG gauges will work for a Wylde chamber (Larue) and 5.56.
What do you think the issue is??
Thanks,
Chuck