New to pws - Primary Weapons Systems MK114 MOD 2-M, .223 Wylde, 14.5in Upper Receiver

Only negative item is man alive was it covered in oil. It wipes off easily enough though. Ran 200 rounds through it at the range. Flawless performance. Burned off oil under the handguard. Cleaned it and Only used a single sheet of a select-a-size paper towel. It was not very dirty. Used a nylon brush on the piston. Boresnakes on the bore. Barrel is not hammer forged but seems fine. Accuracy testing to follow when the weather is cooler. Gas system disassembly requires a little learning curve. Let gravity do the work. Supplied screwdriver required for handguard removal. Not a negative just information. No forward assist but have not used one yet in my lifetime, so no loss there.