Description
Building or refreshing an AR-15 gets a whole lot simpler when the upper shows up done. This TacFire complete upper is chambered in 5.56 NATO, wears a 16" black nitride barrel, and ships with the bolt carrier group and charging handle already installed. Pin it to a compatible mil-spec lower, drop in your optic, and you have a working rifle without chasing down small parts or fighting a barrel nut.
What the TacFire 5.56 Upper Brings to Your Build
The barrel is finished in black nitride, which holds up well against wear and cleans up easily after range trips. It's a threaded muzzle capped with an A2 flash hider, so swapping in a comp or suppressor mount down the road is a simple job. The 7075-T6 aluminum flat-top receiver carries a black anodized finish that matches most lowers and rails on the market, and the free-floating M-LOK handguard gives you plenty of real estate for lights, grips, sling mounts, and hand stops right where you want them.
Setting Up the TacFire AR-15 Upper Your Way
This one ships optic-ready with no iron sights, which is the way a lot of folks prefer to buy an upper. That leaves your budget and your rail free for the red dot, LPVO, or backup irons that fit how you actually run the gun. The full-length top rail lines up with the flat-top for a continuous mounting surface, so co-witnessing a dot with flip-up sights is straightforward.
At right around 5 pounds, this upper keeps a 16" carbine feeling balanced and quick to point, which is why it lands well for range days, home-defense setups, and general-purpose builds alike. Owners of TacFire uppers regularly note reliable cycling and solid accuracy for what these run, with plenty of trouble-free rounds downrange. If you want a dependable, no-fuss way to complete an AR-15, this is a smart piece to build around.
Key Specifications
- Manufacturer: TacFire
- MPN: BU55616
- UPC: 686294505850
- Caliber: .223 Rem / 5.56 NATO
- Barrel Length: 16"
- Barrel Finish: Black Nitride
- Muzzle Device: A2 Flash Hider
- Receiver Material: 7075-T6 Aluminum
- Receiver Finish: Black Anodized
- Handguard: Free-Float M-LOK
- Sights: None, Optic Ready
- Overall Length: Approx. 26.2"
- Weight: Approx. 4.9 lbs
- Product Type: Complete Upper
- Platform Fit: AR-15
What’s Included
- TacFire 16" 5.56 NATO complete upper receiver
- Bolt carrier group (BCG)
- Charging handle
- M-LOK handguard (installed)
- A2 flash hider (installed)
Frequently Asked Questions
Does the TacFire AR-15 complete upper come with a bolt carrier group and charging handle?
Yes. This upper ships with the bolt carrier group and charging handle already included, so it's ready to run out of the box. You just pin it to a compatible lower and add your optic to have a functioning rifle.
Will this TacFire upper fit my AR-15 lower?
It's built to standard AR-15 / mil-spec dimensions, so it pairs with the vast majority of compatible mil-spec lower receivers. Attach it with your takedown and pivot pins the same way you would any standard AR upper. If your lower is mil-spec, you're good to go.
Can I shoot both .223 Remington and 5.56 NATO through it?
Yes. The barrel is chambered in 5.56 NATO, which safely handles both 5.56 NATO and the lower-pressure .223 Remington. That gives you flexibility on ammo depending on what you find and what you're doing, from plinking to defense loads.
Does this upper include iron sights?
No, it ships optic-ready with no sights installed, which keeps the flat-top rail open for whatever setup you prefer. You can mount a red dot, an LPVO, or a set of flip-up backup irons. The full-length top rail makes co-witnessing a dot with iron sights simple.




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