AR10 (DPMS) build questions

[itchyTF]

I'm in the process of planning a build in 6.5cm. Who doesn't want a cartridge that will deliver 3" groups at 10 mi? I have a stripped AMT upper and lower receiver, a Geissele HSNM trigger coming and I know what I'm going to do for a spring and buffer. What I can't decide on is the bcg and barrel. I was thinking of a Rubber City bcg but saw too many negative reviews. I'd like at least a 26" tube with a .936" gas block diameter.
Any recommendations for these two items?

 

[Bamban]

For high pressure loads get the JP Enterprises bolt, any carrier. Call Whiteoak Armaments, John, the owner, does the work himself for orders in the Whiteoak Precision department. He may accommodate your barrel needs.

I turned a couple of 26 inch 6.5 CM barrels for friends, these have 0.936 gas blocks, and plus 2 gas system. Whiteoak sells gas tubes at any length you want. John can custom make one.

These were pretty heavy, 1.2 inches the length of the handguard to match the barrel extension diameter, 2 inches long for 0.930 gas block journal, and the balance is 0.875 to the muzzle. Muzzle threaded for 3/4x24 APA FatB brake. They specified the outside dimensions, wanted the weight.

 

[PRECISIONWELDING01]

JP high pressure bolt is a must. Cry once

 

[Bamban]

JP high pressure bolt is a must. Cry once

Or have https://forum.accurateshooter.com/members/carlsbad.1287427/ here on the forum bush a bolt for you. He did am excellent an job bushing a lefty bolt for one of my friends. The work he did also included turning the firing pin to 0.062. That solved the occasional pierced primers issue. The JP ones have 0.062 firing pins.

I should have mentioned his work in my original post, as it is a great option for those who have bolts already.

 

[Bamban]

DT

 

[marazzi59]

Look at proof research cam gas barrels. They are nice but also have a little explanation on using a longer than normal gas system. What ever barrel you use make sure its the correct length gas system, especially on a 26" 6.5cm. i agree on the jp bolt

 

[itchyTF]

JP high pressure bolt is a must. Cry once

I'm still crying after I saw the price!

 

[SSE]

CDNN has Remington, Bushmaster, DPMS parts for cheap. I think the stripped carrier was 29 or 39 bucks.

 

[SPQR70AD]

I'm in the process of planning a build in 6.5cm. Who doesn't want a cartridge that will deliver 3" groups at 10 mi? I have a stripped AMT upper and lower receiver, a Geissele HSNM trigger coming and I know what I'm going to do for a spring and buffer. What I can't decide on is the bcg and barrel. I was thinking of a Rubber City bcg but saw too many negative reviews. I'd like at least a 26" tube with a .936" gas block diameter.
Any recommendations for these two items?

My 6.5 creedmoor (or less) shoots 1 1/2 at 10 miles and I shoot those groups offhand