16″ AR-15 Magpul Rifle Kit — 12″ House Keymod Rail, 5.56 NATO, 80% Lower

Original price was: $539.95.Current price is: $459.95.

A 16-inch 5.56 AR-15 rifle kit with a 12″ house Keymod free-float rail, Magpul MOE furniture, and an 80% lower receiver included. Fully assembled upper, BCG, charging handle, muzzle device, and LPK. Jig and tooling sold separately. SKU: DT9-199.

16″ AR-15 Rifle Kit — 5.56 NATO, 12″ House Keymod Rail, Magpul MOE, 80% Lower Included

A 16-inch 5.56 AR-15 rifle kit with a 12″ house Keymod free-float rail, Magpul MOE furniture, and an 80% lower receiver in the same box. The upper arrives fully assembled — barrel, gas system, and rail already torqued — so setup is straightforward once you’ve finished the lower. Note: an 80% lower is not a firearm and requires machining before use. Jig and tooling are sold separately.

Specifications:

  • Caliber: 5.56 NATO
  • Barrel Length: 16″
  • Barrel Material: Chrome moly steel, nitride finish
  • Twist Rate: 1:7
  • Gas System: Carbine-length
  • Handguard: 12″ House Keymod Rail (free-float)
  • Stock: Magpul MOE
  • Pistol Grip: Magpul MOE
  • Upper Receiver: Fully assembled
  • Lower Receiver: 80% lower included
  • Approximate Weight: 8 lbs (upper assembly)
  • Brand: Daytona Tactical / Magpul
  • SKU: DT9-199

What’s included:

  • 16″ 5.56 NATO Assembled Upper Receiver (barrel, carbine-length gas system, 12″ house Keymod free-float rail)
  • 80% Lower Receiver
  • Bolt Carrier Group (BCG)
  • Charging Handle
  • Muzzle Device
  • Complete Lower Parts Kit (LPK)
  • Complete Stock Kit with Magpul MOE stock and Magpul MOE pistol grip (buffer tube, buffer, spring, castle nut, end plate)

Not included: 80% lower jig/tooling and sights. Jigs and tooling are available separately at Daytona Tactical.

Browse more AR-15 .223/5.56 Rifle Build Kits at Daytona Tactical.

Weight 8 lbs

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Q: Does this kit include a lower receiver?
Yes — an 80% lower receiver is included. It’s unfinished and not classified as a firearm, so it requires machining before it can be built into a rifle. Jig and tooling are sold separately.

Q: What’s the difference between this kit and the 15″ Keymod version?
The handguard length. This one has a 12″ house Keymod rail; the other has a 15″ rail. Everything else — barrel, gas system, Magpul furniture, and 80% lower — is the same.

Q: Is the upper pre-assembled?
Yes. Barrel, gas system, and the 12″ house Keymod rail are already torqued — just mate it to the finished lower.

Q: What caliber and twist rate does this kit use?
5.56 NATO with a 1:7 twist rate and a 16″ barrel on a carbine-length gas system.

Q: What furniture is included?
Magpul MOE stock and Magpul MOE pistol grip, plus a complete stock kit (buffer tube, buffer, spring, castle nut, and end plate).