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Patriot Ordnance UpprRcvrAssm223 18"DpFltdBbl11"RailBlk 616

Manufacturer Part Number: 616
Manufacturer: Patriot Ordnance
Big Supply Shop ID: 192374
Condition: New


Out of Stock - Quantity: 0
Low Price:$1,058.18

Upper Receiver Assembly 223 Gen 4, Black, 11" M.R.R.


- 18"
- Weight: 5.5 lbs
- Overall Length: 25.25"
- Match grade barrels fluted to reduce weight and dissipate heat.
- 4150 Mil-B-11595E chromoly alloy.
- Corrosion resistant nitride heat-treated 1:8.
- POF-USA triple-port muzzle devices.
- POF-USA oversized heat-sink barrel nut.
- 5.56x45 mm NATO (.223 Remington) chamber.
- E dual-extraction chamber technology (GEN 4 ONLY).

Method of Operation:

- Semi-auto (P415) or full-auto select-fire (P416) rotating bolt, short-stroke gas piston system.
- Corrosion resistant nitride heat-treated gas piston system consisting of a single piece gas block, gas plug, gas piston, and operating rod.
- Multi-position regulating gas system with normal, suppressed, and bolt-action (off) operating modes.

Bolt & Carrier:

- Nickel plated bolt carrier with integrated bolt carrier key.
- POF-USA roller cam pin with chrome plated stem and NP3 roller.
- Chrome plated bolt.

Upper Receiver:

- POF-USA patented Modular Railed Receiver (M.R.R.) free-floating monolithic rail system.
- Billet machined 7075-T6 aircraft aluminum alloy.
- 2-piece upper receiver.
- Black anodized billet charging handle.


- POF-USA free-floating modular, aluminum handguard.
- Black Anodized


- All raw materials, heat-treats, platings/coatings, accessories, and component parts on our weapon systems are made 100% through U.S. owned and operated steel mills and manufacturers.

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