AWC Amphibian II – Ruger MK IV – All Black

The AWC Amphibian II suppressed .22 LR pistol, built on the Ruger MK IV platform, offers a practical and quiet shooting experience for U.S. firearm owners who value precision without the noise. Whether you are managing pests on a rural property, working on fundamentals at an indoor range, or looking for a low-recoil option for new shooters, this suppressed pistol delivers consistent accuracy with minimal report. Its all-black matte finish and compact form factor make it a straightforward tool for target shooting and small game control across varied American environments.

What This Product Is and Who It’s For

The AWC Amphibian II is a factory-integrated suppressed pistol that pairs a Ruger MK IV frame with a dedicated AWC Amphibian suppressor. This is not a aftermarket add-on; it is a complete firearm designed from the ground up for suppressed use. It is chambered in .22 Long Rifle and holds 7 rounds in the magazine.

This firearm is suited for target shooters who want a quiet range experience, especially for training new shooters or practicing trigger control without flinching from loud reports. It also serves well for small game hunting, such as squirrel or rabbit, where a suppressed shot minimizes disturbance. Collectors will appreciate the integrated suppressor design and the all-black matte finish as a clean, functional aesthetic. While not primarily a home defense tool due to its caliber, the suppressed nature can be useful for pest control around outbuildings or rural properties where noise is a concern.

Key Specifications

• Caliber: .22 Long Rifle (LR)
• Capacity: 7 rounds (single magazine included)
• Barrel Length: 4.5 inches (approximate, with integrated suppressor extending overall length)
• Overall Length: Approximately 9.5 inches
• Weight: Approximately 1.5 pounds (unloaded, with suppressor)
• Finish: All-black matte, non-reflective
• Sights: Fixed front blade, adjustable rear sight for windage
• Action: Semi-automatic, blowback operated
• Safety: Manual thumb safety, magazine disconnect
• Suppressor: AWC Amphibian II, integral design, stainless steel baffles with aluminum tube
• Thread Pitch: Not applicable (integrated suppressor, no removable barrel threads)

Feature Deep-Dive

The integrated suppressor is the defining feature of the AWC Amphibian II. Unlike add-on suppressors that require threading and alignment checks, this design is permanently attached to the barrel, ensuring consistent gas seal and repeatable accuracy. The suppressor uses a series of stainless steel baffles housed in an aluminum tube, which effectively reduces the report of a .22 LR round to a quiet pop. This makes it comfortable for extended shooting sessions without hearing protection, though ear protection is always recommended for safety.

The Ruger MK IV platform provides a proven semi-automatic action that cycles standard and high-velocity .22 LR ammunition reliably. The blowback operation is simple and easy to maintain, with fewer moving parts than centerfire pistols. The one-button takedown feature of the MK IV allows you to remove the upper receiver from the grip frame quickly for cleaning, which is important for rimfire firearms that accumulate lead fouling. This takedown system is a significant improvement over earlier MK series models, reducing the time needed for routine maintenance.

The all-black matte finish is applied to both the aluminum receiver and the steel barrel components. This finish reduces glare and resists minor scratches from holster wear or field use. The grip frame features textured panels that provide a secure hold, even with wet or gloved hands. The overall weight of 1.5 pounds helps absorb the minimal recoil of the .22 LR cartridge, allowing for rapid follow-up shots without losing sight alignment.

Sights on the AWC Amphibian II are practical for target work. The front blade is fixed and serrated to reduce glare, while the rear sight is adjustable for windage using a small screw. The sight radius is adequate for the pistol’s size, providing a clear sight picture for distances out to 25 yards. For users who prefer optics, the Ruger MK IV receiver is drilled and tapped for a scope base, allowing the addition of a red dot sight for faster target acquisition.

The magazine is a 7-round single-stack design that fits flush with the grip. It features a polymer base plate and a steel body, with a thumb rest for positive insertion. The magazine release is a button located behind the trigger guard, accessible to both right- and left-handed shooters. The pistol also includes a magazine disconnect safety, which prevents the firearm from firing when the magazine is removed—a standard safety feature on Ruger MK IV models.

Durability is addressed through the use of stainless steel for critical internal parts, including the bolt and firing pin. The suppressor’s baffles are also stainless steel, which resists erosion from the high-temperature gases produced by firing. The aluminum suppressor tube is lightweight and anodized to match the receiver finish. Regular cleaning of the suppressor baffles is recommended to maintain performance, as lead and carbon buildup can affect sound reduction over time.

Ideal Use Cases

• Target Shooting and Training: The low recoil and suppressed report make this pistol ideal for teaching new shooters or for practicing trigger control and sight alignment without flinching. It is also suitable for indoor ranges where noise reduction is appreciated.
• Small Game Hunting: For hunting squirrel, rabbit, or similar small game, the .22 LR cartridge combined with the suppressor allows for a quiet approach, reducing disturbance to nearby game or property. The accuracy of the Ruger MK IV platform supports clean, ethical shots at typical hunting distances.
• Pest Control: On farms, ranches, or rural properties, this suppressed pistol can be used for managing rodents, snakes, or other pests without alarming neighbors or livestock. The compact size makes it easy to carry in a vehicle or tool shed.
• Plinking and Recreational Shooting: For casual plinking at steel targets or cans, the AWC Amphibian II provides a quiet and enjoyable experience. The low cost of .22 LR ammunition makes it economical for high-volume shooting sessions.

Compatibility Notes

• Ammunition: This pistol functions reliably with standard-velocity and high-velocity .22 LR ammunition. Subsonic ammunition will also cycle and provides the quietest operation. Avoid using hyper-velocity or .22 Short rounds, as they may not feed or cycle correctly.
• Holsters: The integrated suppressor adds bulk to the barrel area. Standard Ruger MK IV holsters may not fit. Look for holsters specifically designed for suppressed Ruger MK IV pistols, or use a universal holster that accommodates a suppressor. Custom Kydex holsters from reputable makers are a reliable option.
• Magazines: The pistol uses Ruger MK IV 7-round magazines. Aftermarket magazines from brands like Tandemkross or Volquartsen are compatible, provided they are designed for the MK IV platform. Extended 10-round magazines will also fit but may extend below the grip.
• Accessories: The receiver is drilled and tapped for a scope base (Weaver or Picatinny pattern). Red dot sights like the Vortex Venom or Holosun 407K can be mounted with the appropriate adapter plate. Threaded barrel adapters are not applicable due to the integrated suppressor.
• Suppressor Maintenance: The integrated suppressor can be disassembled for cleaning. Use a standard baffle wrench and follow AWC’s instructions. Soaking baffles in a solvent designed for lead removal will help maintain sound reduction.

Frequently Asked Questions

1. Can this AWC Amphibian II be shipped directly to my home?
No. This is a firearm and must be shipped to a Federal Firearms License (FFL) holder in your state. We will ship it to your chosen FFL dealer after you provide their contact information. We do not ship firearms directly to residential addresses.

2. What is the FFL transfer process?
After placing your order, you will need to select a local FFL dealer to receive the firearm. Contact the dealer first to confirm they accept transfers and to learn their fees. Then, provide us with the dealer’s FFL license information. We will ship the firearm to them, and you will complete the ATF Form 4473 and any state-required background check at the dealer’s location before taking possession.

3. What ammunition should I use for best reliability?
Standard-velocity and high-velocity .22 LR ammunition from reputable brands like CCI, Federal, or Remington works well. Subsonic ammunition, such as CCI Quiet or Aguila Super Colibri, will cycle and provides the quietest operation. Avoid using .22 Short, .22 Long, or hyper-velocity rounds, as they may cause malfunctions or excessive fouling.

4. Does this pistol come with a warranty?
Yes. The AWC Amphibian II is covered by a limited lifetime warranty from AWC Systems Technology for the original purchaser against defects in materials and workmanship. The warranty does not cover normal wear and tear, misuse, or damage from improper cleaning. Ruger also provides its own warranty on the MK IV frame components. Please see the manufacturer’s warranty documentation included with the firearm for full terms.

5. What is your return policy for firearms?
All firearm sales are final. We do not accept returns on firearms due to federal regulations. If there is a defect or issue, please contact us immediately, and we will work with the manufacturer to arrange repair or replacement under warranty. Unused accessories may be returned within 30 days, subject to a restocking fee. We encourage you to inspect the firearm at your FFL dealer before accepting the transfer.

Closing Call to Action

We ship firearms and accessories to all states where they are legal, within compliance with federal and state laws. Orders are processed within one business day, and we provide tracking information once shipped. For questions about compatibility, FFL transfers, or availability, contact our team directly. Add the AWC Amphibian II to your cart to begin the purchase process for this suppressed .22 LR pistol.