This setup is unfired. I have another setup exactly like this one and have not had any issues and is an absolute tack driver. 
 

Upper-

• 5.56 NATO/.223 Remington
• 24" 416 stainless steel fluted HBAR barrel with target crown
• Forged A3 upper receiver
• Rifle-length gas system
• Anderson free-float m-lok handguard
• Brass deflector and forward assist
• Tactical charging handle
• M16 BCG

Lower-

• Complete, open trigger assembled AR-15 lower receiver
• Multi-caliber
• Lower parts kit installed
• Mil-spec buffer tube, buffer assembly included 
• Open-trigger design accommodates gloves
• Magpul 6-position buttsock
• Magpul pistol grip

Optic-Burris close quarters RT-6 combo, includes Burris RT6 1-6x24 scope with quick throw, Burris Fastfire3 red dot and Burris PEPR mount. 

Rifle only-$800.                                                       Rifle and Scope-$1300

Feel free to text me at 785-577-7584