Adams Arms | ERMOX XDEFENSE RX | 12GA | 18.5

The ERMOX XDEFENSE RX from Adams Arms is a 12-gauge semi-automatic shotgun built around an Auto-Regulating Gas-Operated (ARGO) system. The short-stroke dual-piston, self-cleaning piston-driven action places the gas port forward of the chamber to reduce fouling and improve cycling reliability. Pistons push directly against the bolt to minimize vibration and avoid extra weight from linking hardware.

Its compact barrel length and gas system make the design appropriate for tactical training and range practice, and the included choke set and accessory rails support competition or specialized sporting use.

Product Specifications

• The manufacturer is Adams Arms.
• The product name/model is ERMOX XDEFENSE RX 12GA 18.5 TAN X SEMI SG as listed by the supplier.
• The gauge is 12.
• The barrel length is 18.5.
• The action/type is Semi-Automatic.
• The chamber is listed as 3.
• The choke is provided as a 5-piece set with wrench.
• The safety is manual.
• The stock type is Pistol Grip Skeleton Stock.
• The listed weight value is 10.
• Picatinny rail on receiver and barrel: Yes.
• Ported barrel: Yes.
• Extended bolt handle and release button: Yes.
• Magazine capacity is 5+1.
• The UPC is 781834302866.

Overall, the ERMOX XDEFENSE RX emphasizes a low-maintenance gas system and a compact profile. Its piston-driven ARGO design, modular choke set, and accessory rails make it a practical option for shooters focused on reliable cycling and configurable setups for training or competitive applications.