80% Mil-spec Lower?

Sledgehammer45 · Feb 7, 2020

Hi all. Wanting to build an 80 for 5.56. Looking online there's just an overflow of retailers for block lowers offering high/superior quality lowers for your ar that can go from $50-100+. Is there really a difference in quality if the lower is verified as Mil-Spec? I dont want to purchase a product that will break on me in the future. Can anyone point to experience or a company with repute? Thanks

teratos · Feb 7, 2020

I like the ones made by Cerro Forge. They have a key hole forging mark on them and are sold my many manufacturers.

E.Shell · Feb 7, 2020

Sledgehammer45 said:
Hi all. Wanting to build an 80 for 5.56. Looking online there's just an overflow of retailers for block lowers offering high/superior quality lowers for your ar that can go from $50-100+. Is there really a difference in quality if the lower is verified as Mil-Spec? I dont want to purchase a product that will break on me in the future. Can anyone point to experience or a company with repute? Thanks

You're looking for the lower to be made of 7075-T6 alloy. Cheaper ones are made of 6061.

Milspec what? Milspec finish?

ETA:
https://www.mdshooters.com/showthread.php?t=241945

80% Mil-spec Lower?

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