This is a CYMA M4 upper receiver, it’s great, it’s got a 10” keymod handguard, picitiny rail on the top, but no inner barrel/hopup or charging handle. It’s just about all polymer. The outer barrel is metal, aswell as the dust cover. I take Venmo, PayPal, or if you’re in the HEB/DFW Texas Area I can do cash In hand. Id rather PayPal and cash in hand. DM me if you want to give me a different offer on the price! God bless!