Barrels and BCGs

[jctex81]

I am looking at a 18 " stainless barrel which is listed as a 6.5 grendel barrel but has the following specs:

Profile - HBAR .750 Barrel
Chamber - 6.5 Grendel (Type 1. Compound Throat (SAAMI) headspaced for 7.62x39 bolt)

http://www.jsesurplus.com/186.5GRENDELHB...EDSTR.aspx

Will this barrel except a normal 6.5 BCG like:

https://jtdistributing.com/store/ar10065.html

or is it strictly for use with a 7.62x39 bolt? What are the issues?


I am trying to find an 18" stripped heavy barrel in the 200$ range and I found J&T Dist and JSE Surplus

https://jtdistributing.com/store/dbh52019.html

[Beerswimmer]

I am looking at a 18 " stainless barrel which is listed as a 6.5 grendel barrel but has the following specs:

Profile - HBAR .750 Barrel
Chamber - 6.5 Grendel (Type 1. Compound Throat (SAAMI) headspaced for 7.62x39 bolt)

http://www.jsesurplus.com/186.5GRENDELHB...EDSTR.aspx

Will this barrel except a normal 6.5 BCG like:

https://jtdistributing.com/store/ar10065.html

or is it strictly for use with a 7.62x39 bolt? What are the issues?


I am trying to find an 18" stripped heavy barrel in the 200$ range and I found J&T Dist and JSE Surplus

https://jtdistributing.com/store/dbh52019.html

Use what is says to use.

[LRRPF52]

Welcome aboard. My recommendation is to avoid the "7.62x39" bolts that use a .125" bolt face depth. Reason is extractors are more prone to breakage, even with the top end bolts.

Colt did their engineering, RDT&E on the 7.62x39 project, and found that they needed to move the bolt face back to get an extractor groove that would accommodate the thicker rim of the Russian cartridge. They used a .131" face depth.

The Grendel uses a .136" face depth. I don't know why people are still trying to make the .125" bolts work, because you will run into a dead end every time with the extractor geometry.

It is good to see that they are using the SAAMI chamber, but I would get some extra extractors if you can if you plan on getting that barrel. By the time you pay for 2 extra's, you're into better barrel pricing.

Since it doesn't say what the other BCG is using for a bolt, I can't be sure.

[jctex81]

Welcome aboard. My recommendation is to avoid the "7.62x39" bolts that use a .125" bolt face depth. Reason is extractors are more prone to breakage, even with the top end bolts.

Colt did their engineering, RDT&E on the 7.62x39 project, and found that they needed to move the bolt face back to get an extractor groove that would accommodate the thicker rim of the Russian cartridge. They used a .131" face depth.

The Grendel uses a .136" face depth. I don't know why people are still trying to make the .125" bolts work, because you will run into a dead end every time with the extractor geometry.

It is good to see that they are using the SAAMI chamber, but I would get some extra extractors if you can if you plan on getting that barrel. By the time you pay for 2 extra's, you're into better barrel pricing.

Since it doesn't say what the other BCG is using for a bolt, I can't be sure.

Thanks for the knowledge!

[Geardo]

I think the best deal on a barrel right now is from Alexander Arms, they have a fluted stainless steel 16" for $195

[Keep The Change]

I saw these and will be building a carbine upper soon. I was curious about where the barrel comes from.