Iridescent AR-15 Build

Custom ar15 build

AKA, Chamelion, Oil Slick, Rainbow, Iridescent AR-15

Welcome to our Iridescent AR-15 Build blog, where we delve into the building of our Iridescent AR-15. For those seeking a unique and visually stunning custom rifle, the Iridescent AR-15 is a fascinating choice that combines aesthetics and performance. In this blog, we will guide you through the process of creating an AR-15 that not only excels in functionality but also captivates with its iridescent finish. We’ll explore the selection of components, assembly techniques, and finishing touches that will transform your firearm into a true work of art. Join us as we unveil the crafting an AR-15 that gleams with an ever-changing spectrum of colors, turning heads at the range and beyond.

Chameleon, Iridescent, Oil Slick AR’s

Firearms have always been an important aspect of American culture, with a rich history dating back to the country’s founding fathers and Iridescent ARs are the evolution of culture. In recent years, however, the firearms industry has seen a growing trend in the customization and personalization of firearms, including the AR-15. One particular customization that has gained popularity among firearm enthusiasts (including our team) is iridescence.

Iridescence, also known as “rainbow”, “oil-slick,” and other names, refers to the phenomenon where an object appears to change color as it is viewed from different angles. The effect is achieved by applying a special type of coating to the firearm that uses light interference to produce a multi-colored, metallic sheen. The result is a unique and eye-catching look that sets the firearm apart from others. In our case the technical name of the AR-15 we built parts is “Rainbow PVD Coated” by GunTec.

guntec rainbow pvd coated handguard
GunTec Rainbow PVD Coated Handguard

This was one our team’s favorite builds, and it turned out great.

Personalization: Iridescent AR-15s allow firearm owners to express their individuality and personal style. With a rainbow of colors and a unique metallic sheen, these firearms are truly one-of-a-kind.

Versatility: Iridescent AR-15s can be used for various purposes, including target shooting, hunting, and self-defense. The multi-colored look makes them suitable for various activities and environments. The gun’s functionality is not affected, and the parts are not simply built for appurtenance; they hold up in function.

Attention-grabbing: Iridescent AR-15s are designed to turn heads and make a statement. They will grab the attention of anyone who sees them, making them a popular choice.

Durability: Iridescent AR-15s are made with high-quality materials built to last. The special coating is highly durable and resistant to wear and tear, ensuring that the firearm will look just as good as the day it was bought for years to come.

Price: Although by appearance, the Iridescent AR looks like it would be more expensive than a typical AR-15, they actually can be built comparably to building most AR-15s.

Kylee building Iridescent AR
Kylee building our custom Iridescent AR-15.

AR Love, Hate Relationships

The AR-15 is one of the most popular firearms in the United States, and with its popularity comes a wide range of customization options. Iridescence is hotly debated topic in the firearms community and online in particular. We’ve talked about some attractions, but why so many people don’t like them is equally as long.

Some that I hear frequently are:

  • Distracting: Some people feel that iridescent AR-15s are too flashy and distracting, detracting from the purpose and practicality of the firearm.
  • Unprofessional: For some, the iridescent look is seen as unprofessional and not suitable for serious firearms use. They argue that the bright, rainbow-like appearance is not appropriate for a weapon that is meant to be used for serious purposes.
  • Too Trendy: Some firearms enthusiasts believe that iridescence is just a passing trend and not a true representation of the AR-15. They feel that the customization is too focused on appearance and not enough on practicality and function.

The love-hate relationship with iridescent AR-15s comes from personal preference and individual opinions. As you can see from our build and this blog, where we come in on the topic. For us, we have done much more controversial builds than this one, including the “Skull AR-15″ and our most recent build The Spartan, built off the Overthrow receiver by Sharp’s Brothers. Ultimately, the decision to choose an iridescent AR-15 comes down to the individual and what they value in a firearm.

Parts in Our Iridescent AR-15 Build

Custom Oil Slick AR-15 Build

The cost of building an iridescent AR-15 varies greatly depending on the components you choose, how many tools you already have, and the assembly method. On average, you can expect to spend anywhere from $600 to $1500 to build a custom iridescent AR-15. The bulk of the cost will come from the lower receiver, which is the part that is regulated by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF). The barrel can range from a few hundred to over a thousand dollars, depending on the quality and material. Other factors that will affect the cost include the type of stock, grip, sights, and accessories you choose, as well as the cost of any tools and equipment you may need to assemble the rifle. Ultimately, the cost of building an iridescent AR-15 will depend on your individual preferences and the level of customization you desire.

Below is a list of all the parts we used to build our Iridescent AR-15.

Upper Receiver

Iridescent ar-15 upper
Fostech Upper Receiver

Fostech, Inc. forged aluminum stripped upper receiver specifications

MFG: Fostech, Inc.
Type III Anodized Coating
100% USA Made
Limited Lifetime Warranty
Black Anodized finish
Flat-Top with Picatinny rails
Mil-Spec dimensions
This is a stripped upper receiver and does not include internal or external parts such as ejection door assembly, forward assist, bolt carrier group, or charging handle.

Bolt Carrier Group

Guntec Bolt carrier group

BCG Specifications

  • 8620 Steel Bolt Carrier
  • Grade 8 Screws To Mil-Spec
  • USA Made
  • 9310 Bolt MPI (Magnetic Particle Inspected)
  • Aesthetic Coating Which Improves Durability & Lubricity
  • 1 Year Warranty
  • Hydraulically Staked CL Key
  • Matte Rainbow PVD (Physical Vapor Deposition) Finish On Bolt Carrier, Nitride Finish On Bolt, Firing Pin Retainer, Staked Screws & CAM Pin

Charging Handle

Iridescent AR-15 Charging handle

Ejection port cover-dust cover

GunTec Rainbow PVD Coated Dust Cover

Guntec Rainbow PVD Dust cover

US Made
Includes Dust Cover, Rod, Spring, And Clip
Weight: 0.5 oz
Recommended For Billet Uppers Only
T6 6061 Aluminum
Adjustable Set Screw Allows Proper Alignment For Opening And Closing On Receiver
Gen 3 Design
.223 Cal
Ultra Lightweight
Gloss Rainbow PVD Coated Finish

Forward Assist

GunTec Rainbow PVD Forward Assist

Forward Assist Specifications

US Made
Matte Rainbow PVD Coated Finish
Includes Button, Spring, And Pin
Complete Assembly

Time Lapse of the Iridescent AR-15 Build


Ballistic Advantage 223 Wylde Barrel

Ballistic Advantage 16″ Government Profile Mid Length Modern Series

Barrel Specifications

This 556 Wylde chambered 16-inch barrel is machined from 416R Stainless Steel with a bead-blasted finish. These Premium Series Barrels feature a Nickel Boron Coated Extended M4 Feed Ramp Extension.

  • Length 18″
  • Material 416R Stainless Steel
  • Profile SPR
  • Finish Bead Blasted
  • Twist Rate 1:8″
  • Gas System Length Rifle
  • Gas Block Journal .750″
  • Muzzle 1/2×28 Threaded
  • Weight 41oz
  • Other Info HP and MPI Tested

Gas System

Superlative Arms Low Pro Gas Block


15″ Ultra lightweight thin MLOK thin free-floating handguard

Barrel Specifications:

  • US Made
  • Proprietary Barrel Nut Included
  • M-LOK System
  • Tight Fit Up Against Receiver, Which Allows For A Monolithic Top Rail
  • T6 Aluminum Body
  • Rail Slides Over Barrel Nut, And Is Locked Up Against the Receiver With 6 Screws
  • Internal Diameter: 1.34″
  • 15″ Extended Length
  • Ultra Lightweight
  • Total Weight Including Barrel Nut Is 11 Oz
  • Heavy Duty
  • Gloss Rainbow PVD Coated Finish

Sights and or Optics

Sig SOR71001 Sauer Romeo7 1X30mm Full Size 2 MOA Red Dot, GraphiteFinish

Romeo7 Description:

Sig Sauer ROMEO7 full-size red-dot sight provides the civilian and armed professional with a robust 1x aiming solution optimized for today’s MSR platforms, regardless of caliber. The battery life lasts an amazing 62, 500 hours (on medium setting) and the low AA battery compartment allows for quick battery replacement without having to remove the sight from the firearm. The high-performance lens coating allows for not only excellent light transmission and zero distortion but also allows for the highest possible dot brightness. Features Low Dispersion (LD) glass lens design with high-performance coatings for excellent light transmittance and zero distortion.

Custom Iridescent AR-15
Finished Iridescent Custom AR-15

Lower Receiver

Fostech Lower Receiver

FosTech Tech-15 Forged AR-15 Lower Receiver Black Stripped US Flag Logo


  • Stripped
  • Forged Aluminum Construction
  • Mil-Spec AR-15
  • 100% USA Made
  • Limited Lifetime Warranty

Lower Parts Kit

Guntec AR-15 finishing kit

Mag Catch Lever
Multi Degree Short Throw Ambi Safety
Forward Assist Assembly
5.56 Charging Handle
Extended Take Down Pin Set
Anti-Rotation Pin Set
Extended Mag Catch Release
Extended Bolt Catch Release
Enhanced Trigger Guard
Buffer Tube


Geissele semi auto ar15 trigger

Geissele Trigger Description:

Built on the chassis of the Geissele SSA, the Super Semi-Automatic Enhanced (SSA-E) provides enhanced trigger control and weapon accuracy while maintaining the robustness and reliability of our combat-proven two-stage trigger. The SSA-E’s reduced first and second-stage pull weights result in a trigger with a smooth, light first stage take-up and a crisp, candy cane-like second-stage break.

Pistol Grip

Iridescent custom AR pistol Grip

GunTec Ultralight Series Skeletonized Aluminum Pistol Grip- Rainbow PVD finish

Pistol Grip Specifications:

  • T6 Aluminum
  • Matte Rainbow PVD Coated Finish
  • Perfect Width Enhances Trigger Pull
  • Total Weight: 3.6 oz!
  • Lightweight
  • Skeletonized Cut Out Design
  • Ultralight Series
  • Ergonomic Finger Grooves For Comfort

Buffer System and Stock

GunTec Rainbow PVD Coated Buffer System

Full-Length Build Video

Notes from this build and troubleshooting.

Iridescent AR-15s are a unique and attractive trend in the firearms industry. Whether you are looking for a personal statement piece, a collectible AR-15, or a versatile firearm that can be used for various activities, an iridescent AR-15 is an excellent choice. With its rainbow of colors, metallic sheen, durable design, and lightweight parts, it will surely catch the eye and make a lasting impression.

We had a blast doing this build; comments are welcome below.


  • Michael Hodgdon

    A firearm, shooting, outdoor, and hunting enthusiast for over 35 years. Thank you all for the suggestions on topics you would like to see; we'll keep posting as you keep sending them in. Please comment; we will try to answer all comments quickly.

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