This is a love letter to Battlefield 3. Agent Espo built a clone of the M16A3 -- the starting weapon for the US Marines in BF3's multiplayer and arguably the best gun in the game. Fast reload, high rate of fire, and full auto made it a monster on maps like Noshahr Canals and Operation Metro. The real build runs a TNTE flat top upper with an Aero Precision detachable carry handle, P&S M5 RAS quad rail with matching rail covers and vertical foregrip, and an A2 birdcage flash hider (Espo went A2 over the game-accurate A1 because he prefers it -- his build, his call). Lower is an 80% receiver marked M16A3, fitted with a Hogue grip and an A1 stock wrapped in medical wrap and painted to match the in-game camo. The optic is a Trijicon RX06 with the 6.5 MOA amber triangle -- a discontinued model powered by tritium and fiber optic that Trijicon may not even service anymore. The light is a PentagonLight UX2, sourced after Espo tracked down the goofy looking lights from the game through a Reddit clone post. Pentagon went under after Surefire sued them over tailcap designs, so good luck finding one. Mags are Colt USGI with Magpul Mag Assists.

The M16A3 vs A4 debate gets addressed too -- the Navy used A3s in both fixed carry handle and flat top configs. Official designation called for a fixed carry handle but flat tops did exist in the field. Putting one in the hands of Marines in 2014 like BF3 does is a stretch, but that's video games for you.

Pros:

• Dead-on recreation of one of the most iconic weapons from one of the best FPS games ever made
• The paint job and stock wrap nail the BF3 aesthetic -- this thing looks like it was pulled out of Operation Swordbreaker
• Trijicon RX06 is a cool piece on its own -- tritium powered, no batteries, discontinued collector's item
• P&S M5 RAS is the correct rail for the era and gives it that mid-2000s military look
• USGI mags with Magpul assists are a functional and period-appropriate touch
• The A3/A4 lore and history breakdown in the video is actually informative -- most people don't know the difference and Espo does his homework
• PentagonLight UX2 is an obscure deep cut that shows real attention to detail

Cons:

• PentagonLight is defunct -- finding a UX2 means hunting the used market with no guarantee of replacement parts or service
• Trijicon RX06 is discontinued and may not be serviceable, so if the tritium dies you're out of luck unless you find another one
• 80% lower means you're doing your own milling -- not for everyone and comes with its own legal considerations depending on your state
• CMMG lower parts kit isn't clone correct, which will bother the purists
• A2 birdcage instead of A1 flash hider breaks clone accuracy if that matters to you
• A1 stock is used instead of the more game-accurate A2 -- again, personal preference over strict accuracy
• The BF3 paint job looks awesome but medical wrap and spray paint won't hold up the same way cerakote or proper camo-form tape would over time and use
• Retro and clone-correct parts sourcing is a constant headache -- half this stuff is out of production, limited run, or sitting in some gun store waiting to be found by accident https://www.agentespo.com/bf3m16a3