https://midstatefirearms.com/product/rifle-build-kit-chf-16-barrel-ar15-5-56-17-pinweld-muzzle/

shipping available

16″ Ar15 Rifle upper, Free Float Rifle Build Kit – Everything you need except the stripped lower receiver. Cold Hammer Forged barrel, muzzle pinned & welded

• 16″ CHF 4150 CMV Melonite steel Barrel
• 5.56 Nato 1:7 (shoots both 5.56 and .223)
• Mil Spec 7075-t6 Aluminum receiver
• M4 Feed Ramps
• Mid Length Gas system
• .750 Gas Block
• 15″ Free Float Slim Rail (pic shows keymod, Mlok is likely what will ship)
• a2 Flash Hider
• M16 Nitride Bolt Carrier Group
• Charging Handle

Complete Lower Parts Kit

6 Position Stock and Buffer Tube Kit (stock may vary)