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WP360 AR15 Assembled Upper Receiver Package –.223 Wylde

The .223 Wylde is built for shooters prioritizing precision and versatility. Featuring a forged 7075-T6 aluminum upper machined to Mil-Spec standards and a 16" 4150 CMV barrel with a corrosion-resistant QPQ finish, this upper guarantees durability and consistent accuracy. The .223 Wylde chamber combines the best traits of .223 Remington and 5.56 NATO, allowing reliable shooting of both ammo types with improved accuracy potential—ideal for competition, tactical, or general use. Equipped with a free-float 15" handguard, premium bolt carrier group, and metal flip-up iron sights, this package delivers dependable performance and quick target acquisition. Fully assembled, sighted in, and made entirely in the USA, it’s ready to deliver dependable, accurate shots right out of the box. 

Upper Receiver

• Forged from 7075‑T6 aluminum

• Precision machined to mil‑spec M16/M4 specifications

• M4 feed ramps for reliable feeding

• Type III hard-coat anodized finish

• Laser‑engraved T‑marks (light)

• Forward assist and dust cover installed

• .250 takedown pin holes for universal fit

• 100% Made in the USA

Bolt Carrier Group (BCG)

• M16 style carrier – 8620 steel, H&M Black Nitride finish

• Bolt – 9310 steel, heat treated, shot peened, MPI/HPT tested (batch)

• Gas key – 4140 billet steel, properly seated with Grade 8 fasteners and staked for reliability

• Cam pin – 4140 steel, nitride treated for wear resistance

• Extractor – billet 4140 steel, heat treated, shot peened, phosphate coated with insert and Viton O‑ring

• Firing pin – 17‑4 H900 stainless steel, precision machined

• Final ground before plating for true fit

• Test-fired and inspected for proper function

• 100% Made in the USA

Charging Handle

• Standard AR15 mil‑spec design

• Machined from billet 6061‑T6 aluminum

• Black anodized finish

• Lightweight – 1.5 oz

• Proudly Made in the USA

15" Handguard

• Free‑float design, machined from 6061‑T6 aluminum

• Length: 15" with continuous top Picatinny rail

• M‑LOK® slots at 3, 6, and 9 o’clock positions

• Anti‑rotation tabs for secure lockup (fits forged uppers; may require hand‑fit on billet)

• 6061‑T6 barrel nut, no indexing required

• Hard-coated anodized finish

• Inside diameter: 1.350"

• Weight with mounting hardware: 12.6 oz

• Compatible with low‑profile gas blocks

• 100% Made in the USA

16" .223 Wylde Barrel – Government Profile

• Chamber: .223 Wylde (accepts .223 Rem & 5.56 NATO)

• Length: 16"

• Mid‑length gas system, 0.076" gas port

• Twist rate: 1:8 RH

• Material: 4150 CMV steel, QPQ Blacknitride+™ treated

• Government profile, 29 oz

• M4 barrel extension, QPQ coated feed ramps

• Thread: 1/2x28, 

• 11° target crown

• Stress relieved, air‑gauge inspected, headspace verified

• Made in the USA

Gas System

• Low profile .750 gas block – 4140 heat-treated steel, QPQ finish, set‑screw secured

• Stainless steel gas tube (mid‑length) with coiled roll pin

• 100% Made in the USA

Muzzle Device

• A2‑style Birdcage flash hider/compensator

• 4150 steel construction, black phosphate finish

• 1/2‑28 threading, includes crush washer

• 6 slot pattern with solid bottom to reduce dust signature

• Weight: 2.56 oz

Flip-up Iron Sights

• Built from high-quality aluminum alloy for rugged, reliable performance in any environment

• Spring-loaded pop-up action deploys instantly at the push of a button for fast target acquisition

• Compatible with all rifles using Picatinny or Weaver rail systems (Winchester, Remington, Colt, and more)

• Front sight adjustable for elevation; rear sight adjustable for smooth windage control

• Low-profile, flat-folding design stays out of the way when not in use

• Lightweight and compact to minimize bulk without sacrificing performance

• Includes front sight adjustment tool for quick and easy zeroing