WTB .223/5.56 upper

[mkk]

Looking for a project .223/5.56. I've got a lower ready to go so just need to build an upper.
I'd like to build this one to shoot the 77gn SMK

 

[justinspicher]

Do you have any other specifics for this upper besides caliber?

 

[mkk]

Do you have any other specifics for this upper besides caliber?

not really, just seeing what's out there