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Need advice building lightest upper I can


Robert King

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I just finished a similar build for hoser type matches and love it. Very fast. Standard forged upper and lower with a Faxon lightweight 16" pencil barrel/1-8 twist mid gas, Taccom .625 comp, Samson forend, Battle link minimalist stock, and Primary arms 1-6 scope/mount.Using a Taccom light carbine buffer and spring with a RCA adjustable gas key. A little tuning of the comp by drilling it out and adjusting the gas key and it shoots very flat with little recoil. Weighs about 7lbs. total. I have shot it in matches out to 400 yards with no problem.

gerritm

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  • 3 weeks later...
  • 1 month later...

Thought I would update the thread with my final results. I know I could have gotten it a fair bit lighter if I was willing to invest more $$$, but I like the balance of weight vs. cost I hit.

Complete upper ended up at 48.25 ounces. I'm into a total of $690 with all new parts. Kept the price that low by using a blem handguard. I could have knocked off 2 ounces with a 2A Armament upper, but it would have added $200 to the cost. I could have knocked off 5 ounces with a carbon fiber handguard, but it would have added at least $125.

Anderson Sport Upper

Faxon 16" .625 Barrel

TACCOM .625 Adjustable Comp

Generic Adjustable .625 gas block

Odinworks 15" Handguard

JP LMOS BCG

Bravo Company Charging Handle

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Thought I would update the thread with my final results. I know I could have gotten it a fair bit lighter if I was willing to invest more $$$, but I like the balance of weight vs. cost I hit.

Complete upper ended up at 48.25 ounces. I'm into a total of $690 with all new parts. Kept the price that low by using a blem handguard. I could have knocked off 2 ounces with a 2A Armament upper, but it would have added $200 to the cost. I could have knocked off 5 ounces with a carbon fiber handguard, but it would have added at least $125.

Anderson Sport Upper

Faxon 16" .625 Barrel

TACCOM .625 Adjustable Comp

Generic Adjustable .625 gas block

Odinworks 15" Handguard

JP LMOS BCG

Bravo Company Charging Handle

Here is a pic.

Thanks for closing the loop on this. Very nice looking upper!

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  • 1 year later...
On 5/1/2015 at 8:15 PM, Robert King said:

Thought I would update the thread with my final results. I know I could have gotten it a fair bit lighter if I was willing to invest more $$$, but I like the balance of weight vs. cost I hit.

Complete upper ended up at 48.25 ounces. I'm into a total of $690 with all new parts. Kept the price that low by using a blem handguard. I could have knocked off 2 ounces with a 2A Armament upper, but it would have added $200 to the cost. I could have knocked off 5 ounces with a carbon fiber handguard, but it would have added at least $125.

Anderson Sport Upper

Faxon 16" .625 Barrel

TACCOM .625 Adjustable Comp

Generic Adjustable .625 gas block

Odinworks 15" Handguard

JP LMOS BCG

Bravo Company Charging Handle

where did you find the .625" adjustable gas block?
thanks! 

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