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RetroArms CNC Center Pin M4 / AR15 with Screws
RetroArms M4 / AR15 Center Pin with Screws is designed to secure the V2 / V2.5 gearbox in the lower receiver of M4 / AR15 or SR-25 platforms. Unlike a standard center pin, it features threads and screws on both sides, preventing it from being lost. The pin is manufactured by precision CNC turning from 1.1191 steel and, together with the screws, is surface hardened and chemically blackened.
25+ years of proven equipment and accessories.
RetroArms Center Pin with Screws for M4 / AR15 and SR-25 Receiver
CNC center pin is designed for the lower receiver of AR15-platform airsoft guns. The design with screws on both sides keeps the pin securely in place and eliminates the risk of losing it. Precision CNC machining and the steel construction make it a suitable replacement during servicing or receiver modifications. The pin is used to center and secure the gearbox in the lower half of the receiver.
Key Features
Steel Construction
The pin is made of 1.1191 steel, providing the necessary strength for the stressed connection of the receiver.
CNC Turning
The pin is manufactured using precision CNC turning for accurate dimensions and a precise fit.
Screws on Both Sides
The pin features threads and screws on both sides, preventing it from coming loose and getting lost during gameplay.
Hardened Surface
The pin and screws are surface hardened, increasing their resistance during use.
Blackened Finish
The components feature a chemically blackened finish that protects the surface and matches the appearance of standard black receiver components.
Compatibility and Installation
The pin is designed for the lower receivers of AR15 airsoft guns. According to the manufacturer, it can be installed in any M4 / AR15 receiver, including SR-25 models, that complies with the TM external parts standard.
Technical Specifications
- Type: Center pin with screws
- Material: 1.1191 steel
- Manufacturing: CNC turning
- Surface Finish: Surface hardening, chemical blackening
- Compatibility: M4 / AR15 and SR-25 airsoft receivers
Package Contents
- 1× CNC M4 / AR15 center pin
- 2× retaining screws
| Color | Black |
| Body/receiver material | Metal |
| Gearbox version | V2 |