Why we made Bushmaster Upgrade Kit - 5.56 NATO/.223 REM
The Bushmaster® Upgrade Kit brings together three essential accessories for compatible 5.56 NATO and .223 Remington AR-platform rifles in one convenient, value-packed bundle. Choose your preferred sling color: Black, Coyote, Gray, or Ranger Green.
The included Bushmaster® Snake Charmer™ II muzzle brake is designed to significantly reduce felt recoil and features 1/2x28 threading with a durable salt bath nitride finish.
Two Magpul® PMAG® 30 AR/M4 GEN M3® Window magazines provide dependable 30-round capacity and feature dual-side transparent MagLevel® windows for quick visual identification of the approximate number of rounds remaining. Their impact-resistant polymer construction, anti-tilt followers, stainless steel springs, and optimized geometry are engineered for strength, durability, and reliable feeding.
Completing the kit is a Magpul® MS4® Dual QD Sling GEN2 in your selected color. Its convertible design allows quick transitions between one-point and two-point configurations. Two heavy-duty push-button QD swivels, rugged 1.25-inch nylon webbing, and an easy-to-use adjustment slider deliver versatile, secure rifle retention.
The Bushmaster® Upgrade Kit was created to provide compatible 5.56 NATO/.223 Remington rifle owners with a practical collection of essential accessories in one convenient package. It combines recoil management, additional magazine capacity, and versatile rifle retention—making it easier to complete your setup and get range ready.
WHAT’S INCLUDED
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1 × Bushmaster® Snake Charmer™ II Muzzle Brake — 5.56 NATO/.223 REM, 1/2x28
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2 × Magpul® PMAG® 30 AR/M4 GEN M3® Window Magazines — 5.56x45, Black
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1 × Magpul® MS4® Dual QD Sling GEN2 - Selected color: Black, Coyote, Gray, or Ranger Green
COLOR OPTIONS
Color selection applies to the sling only. The muzzle brake and both magazines are black in every kit.
COMPATIBILITY
Designed for compatible AR15-platform rifles chambered in 5.56 NATO, .223 Remington, or .223 Wylde.
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Muzzle brake installation requires a 1/2x28 threaded muzzle.
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Magazines fit compatible AR15, M4, M16, and other supported STANAG 4179-pattern platforms.
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The MS4 sling requires compatible QD sling mounting points.
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Supports one-point and two-point sling configurations.
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Magazine capacity and shipment are subject to applicable jurisdictional restrictions.
Always verify your firearm’s caliber, muzzle threading, magazine compatibility, and QD mounting points before use.
Features & Specifications
Important Information
Firearms Shipments:
In accordance with federal regulations, firearms may only be shipped to a licensed dealer. To avoid any delays in delivery, kindly ensure that you provide the FFL Dealer's information in the Shipping Directions when placing your order. If you do not provide the information with your order, we will reach out and request you provide us with your dealer's information to obtain a copy of their FFL. Once we receive the FFL, we will begin processing your order, and the lead time will start from that point. Please feel free to reach out to us at FFL@bushmaster.com if you have any queries or concerns regarding this proces.
Lower Receivers Shipments:
Lower receivers are also considered firearms under federal regulations and require an FFL (Federal Firearms License) prior to shipment. Therefore, it is important to ensure that your FFL dealer sends us a copy of their license, along with your name and order number via email. We appreciate your attention to this matter as it helps us ensure a smooth and timely delivery of your order. If you have any questions or concerns about this process, please do not hesitate to contact us at FFL@bushmaster.com
Magazines Shipments:
The magazine capacity of the firearm will depend on the jurisdictional restrictions of your state of residence. We want to ensure you receive a product that complies with your state's regulations.
Shipping to Alaska or Hawaii:
If you're shipping to Alaska or Hawaii, please be aware that there may be additional shipping charges. If applicable, we will contact you at the time of shipment to discuss additional costs. As always, your satisfaction is our top priority.
Important Information:
Warning: This product can expose you to chemicals, including lead, known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to - https://www.P65Warnings.ca.gov
