AWC Amphibian II – Ruger MK IV – All Black

Description

The AWC Amphibian II integrated with the Ruger MK IV represents a refined approach to suppressed .22 LR shooting, designed for the American shooter who values precision without excess noise. Whether you are controlling pests on a rural property, introducing a new shooter to the sport, or refining your own marksmanship at the range, this combination offers a practical and reliable tool. The integrated suppressor system reduces report and recoil, making each shot more manageable and less disruptive to your surroundings.

What This Product Is and Who It Is For

This is a Ruger MK IV pistol equipped with a permanently attached AWC Amphibian II suppressor, finished in Cerakote Black. The suppressor is integral to the barrel, meaning the overall length remains compact while providing significant sound reduction. This setup is intended for target shooters who want a quiet range experience, hunters seeking a low-noise option for small game and varmints, and collectors who appreciate a purpose-built, cohesive firearm system. It is also suitable for home defense where over-penetration and hearing safety are concerns, though .22 LR is a lower-energy cartridge. The combination of the MK IV’s proven action and the Amphibian’s suppression makes this a versatile choice for anyone who values control and discretion.

Key Specifications Breakdown

• Caliber: .22 Long Rifle (.22 LR)
• Capacity: 10+1 rounds (standard magazine)
• Barrel Length: 4.5 inches (approximate, with integrated suppressor adding minimal overall length increase)
• Overall Length: Approximately 8.5 inches (with suppressor)
• Finish: Cerakote Black (non-reflective, corrosion-resistant coating)
• Weight: Approximately 38 ounces (with suppressor and empty magazine)
• Sights: Fixed front blade and adjustable rear sight for windage and elevation
• Action: Semi-automatic, blowback-operated
• Safety: Ambidextrous manual safety; magazine disconnect
• Suppressor: AWC Amphibian II, permanently attached (integral design)
• Construction: Aluminum frame; steel barrel and suppressor housing

Feature Deep-Dive

The AWC Amphibian II suppressor is the defining feature of this firearm. Unlike a detachable suppressor, this unit is permanently affixed to the barrel, which simplifies legal ownership in states with specific suppressor regulations and eliminates the need for a separate tax stamp for the suppressor itself (the firearm is treated as a single NFA item). The integral design also improves balance and handling by keeping the weight centered over the bore axis. The suppressor uses a series of baffles to reduce the sound of each shot to a level that is comfortable without ear protection for most standard-velocity .22 LR ammunition, making it an excellent tool for training or plinking in noise-sensitive areas.

The Ruger MK IV platform is known for its reliability and ease of maintenance. The one-button takedown system allows the shooter to disassemble the pistol for cleaning without tools, which is critical for .22 LR firearms that accumulate carbon and lead residue quickly. The MK IV’s bolt hold-open feature and ambidextrous controls make it accessible to left- and right-handed shooters. The integrated suppressor does not interfere with this takedown process, as the suppressor is part of the barrel assembly, which can still be removed from the receiver. This design ensures that routine cleaning remains straightforward, extending the life of the firearm.

Cerakote Black finish is applied to all external metal surfaces, providing a durable, low-glare coating that resists scratches, solvents, and corrosion. This finish is well-suited for humid environments or frequent handling at the range. The aluminum frame keeps the weight manageable while maintaining structural integrity. The grip angle and texture are designed for a natural point of aim, and the adjustable rear sight allows the shooter to zero the pistol for different ammunition types. The factory sights are low-profile, which is intentional for use with the suppressor; the sight picture remains clear and unobstructed.

The trigger on the Ruger MK IV is a two-stage design with a crisp break and a short reset. It is not a competition trigger, but it is consistent and predictable, aiding accuracy at typical .22 LR engagement distances. The magazine release is located at the base of the grip, similar to the original Luger design, and is easy to operate with a thumb or finger. The 10-round magazine is flush-fitting and feeds standard-velocity, high-velocity, and subsonic .22 LR ammunition reliably. The integrated suppressor is rated for all common .22 LR loads, though subsonic ammunition will provide the quietest performance.

This firearm is built for longevity. The steel barrel and suppressor components are precision-machined and heat-treated to withstand thousands of rounds. The AWC Amphibian II design includes user-serviceable baffles, allowing for occasional deep cleaning to maintain suppression efficiency. The MK IV’s bolt is machined from stainless steel and features a hardened firing pin. The combination of these materials means the firearm will hold up to regular use without significant wear. For collectors, this model represents a specific era of suppressor integration, combining a respected pistol with a legacy suppressors manufacturer.

Noise reduction is the primary functional advantage of this system. The .22 LR cartridge is already relatively quiet compared to centerfire rounds, but the Amphibian II reduces the report to a level similar to a high-powered air rifle. This makes it practical for training in confined spaces or for introducing new shooters who may be sensitive to loud noises. The reduced recoil also helps maintain sight alignment for faster follow-up shots. For varmint hunters, the suppressed report can prevent alerting nearby game, allowing for multiple shots in a single outing without spooking the area.

Ideal Use Cases

Target and Range Shooting: The low recoil and suppressed report make this an excellent choice for extended range sessions. Shooters can practice fundamentals without fatigue or noise complaints. The adjustable sights and consistent trigger support accurate shooting at 25 to 50 yards.

Small Game and Varmint Hunting: The .22 LR is a classic choice for squirrels, rabbits, and similar game. The suppressor allows for quieter shots that do not disturb the surrounding area, and the pistol’s balance makes it easy to carry in the field. Use with subsonic ammunition for maximum discretion.

Home Defense: While .22 LR is not a primary defensive cartridge, the suppressed operation can reduce hearing damage in an enclosed space. The lightweight and compact size make it easy to maneuver indoors. It is suitable as a secondary option or for users who cannot handle higher recoil.

Collector’s Item: The AWC Amphibian II is a noted suppressor model, and its integration with the Ruger MK IV creates a distinct firearm. This model appeals to those who appreciate firearms with integrated suppression and the engineering behind it.

Compatibility Notes

Ammunition: This firearm cycles reliably with standard-velocity, high-velocity, and subsonic .22 LR ammunition. For best suppression, use subsonic rounds rated below 1100 feet per second. Avoid hyper-velocity or lead-free ammunition unless confirmed to function.

Holsters: Standard Ruger MK IV holsters will not fit due to the integrated suppressor. Look for holsters designed for suppressed MK IV models or custom kydex options. The suppressor diameter is approximately 1 inch, so holsters must accommodate this.

Magazines: Use only Ruger MK IV 10-round magazines. Aftermarket magazines may not fit or function correctly. The magazine release is specific to the MK IV generation.

Accessories: The receiver has an integrated rail for mounting optics, such as a red dot sight. Suppressor covers are available to reduce mirage during extended firing. Threaded barrel adapters are not needed as the suppressor is permanent.

FAQ Section

1. Can this firearm be shipped to my address in the United States?
This item is classified as a Title II NFA firearm (suppressor integrated). It can only be shipped to a Federal Firearms License (FFL) holder with a Class 3 Special Occupational Tax (SOT) designation. We do not ship directly to consumers. Once your local dealer accepts the transfer, you will complete the ATF Form 4 process for registration.

2. What is the FFL transfer process for this suppressor-integrated pistol?
After purchase, we will ship the firearm to your chosen FFL/SOT dealer. You must submit a completed ATF Form 4 (Application for Tax Paid Transfer and Registration of a Firearm) with a $200 tax stamp. The dealer will handle the paperwork and background check. Approval typically takes 6 to 12 months. Once approved, the dealer transfers the firearm to you.

3. What ammunition is compatible with the AWC Amphibian II suppressor?
The suppressor is rated for all standard .22 LR ammunition. For optimal noise reduction, use subsonic loads. Avoid using ammunition with a velocity exceeding 1200 fps, as this can cause increased wear and reduced suppression. Lead-free or copper-plated rounds are acceptable but may require more frequent cleaning.

4. What warranty is offered on this firearm?
The Ruger MK IV comes with a limited lifetime warranty from Ruger Firearms, covering defects in materials and workmanship. The AWC Amphibian II suppressor is covered by AWC’s warranty against manufacturing defects. We recommend registering the firearm and suppressor with the respective manufacturers upon transfer. This warranty does not cover damage from misuse or improper maintenance.

5. Can I return this item if I change my mind?
Due to NFA regulations and the specialized nature of this product, all sales are final. We cannot accept returns or exchanges once the firearm is transferred to your dealer. Please ensure you understand the legal requirements and wait times before purchasing. Contact our customer service if you have specific questions about the process.

Closing Call to Action

This AWC Amphibian II integrated Ruger MK IV is available now for shipping to your local Class 3 FFL dealer across the United States. We handle the paperwork and coordinate with your chosen dealer to ensure a smooth transfer. Add this to your cart to begin the process, or contact us if you need assistance locating a dealer near you. Quiet, accurate, and built for the long term—this is a firearm that delivers on its design.