https://midstatefirearms.com/product/16-non-threaded-ar-15-upper-5-56-nato-1-8-with-mlok-handguard/

shipping available

Professionally assembled Ar15 upper with unthreaded barrel. Whether you just want a crowned barrel or need it nonthreaded for compliance purposes, we’ve got this ar upper available for your ar15 rifle build.

• 16″ 5.56 NATO 1:8 Nitride barrel
• 4150 chromoly vanadium cmv barrel
• 5.56 NATO chamber (shoots 223 also)
• Target crown
• Mid length gas
• .750 gas block diameter
• Steel low profile gas block
• Stainless gas tube
• 7075-t6 mil spec aluminum receiver, anodized black
• Dust cover
• Forward assist