This is an FN licensed M4A1 GBBR by WE. Includes everything pictured, for a typical military style M4 or parts for something like a TTI style M4. The Trijicon ACOG is a clone with trades but a great one. The bayonet’s sheath is just missing the clip that attaches it to a belt. I re built the included mag and it is is great, non-leaky condition. The gun itself works perfectly, firing, locking back, etc. The knights Armament key mod handguard has the original outer barrel sorta stuck in it (one of the reasons why I got the RA Tech steel outer) but it is in a way that that whole group of parts can be easily and completely installed as intended. LIMITED TIME: If you purchase now, I’ll throw in two of the polymer Magpul style WE gas mags and a Magpul mag coupler for free (for a total of three has mags) Installed upgrades include: RA Tech Steel outer barrel, Ambidextrous selector switch Metal loading nozzle guides (in bolt carrier group) Guarded loading nozzle Hoping to sell as a set and not part out. I accept PayPal only. Please NO TRADES.