"Machine gun" upper recommendation

[Will3212]

I'm trying to build an AR with a binary trigger and drum mag. I want it to be in the style of a 5.56 machine gun with an Atlas bipod. Question is which complete upper receiver should I go with? I was thinking of one of PSA's complete FN CHF barreled uppers.
Any recommendations?

[bogey1]

I'd go with a better made one like BCM.

[Will3212]

Was also thinking of this
https://vtsupply-com.3dcartstores.co...d-_p_5756.html

[JoshIronshaft]

You can get a shrike belt fed upper, that being the most expensive option.

Otherwise just get something with a heavy barrel. Probably a wide free float handguard to keep your support hand cool.