CMMG AR-15 Firing Pin – .223 Rem / 5.56 NATO / .300 Blackout
The CMMG AR-15 firing pin is a precision replacement component designed to support reliable ignition and consistent performance in compatible MK4 and AR-15 platforms. Built from durable stainless steel, this firing pin is made for shooters who want dependable function when maintaining, repairing, or upgrading their rifle.
Key Features
- Designed for AR-15 and CMMG MK4 platform rifles
- Compatible with .223 Rem, 5.56 NATO, and .300 Blackout
- Precision replacement part for reliable ignition
- Constructed from durable stainless steel
- Silver finish for a clean, corrosion-resistant surface
- Ideal for maintenance, repair, or spare parts kits
A quality firing pin is critical to dependable rifle operation, and this CMMG component is built to maintain proper function across common AR-15 chamberings. Whether you are replacing a worn part or keeping a backup on hand, this firing pin offers the fit and reliability needed for consistent performance.
Specifications
- Manufacturer: CMMG
- Model: Firing Pin
- Compatible Calibers: .223 Rem, 5.56 NATO, .300 Blackout
- Compatible Platform: AR-15 / MK4
- Material: Stainless Steel
- Color: Silver
- Manufacturer Part Number: 55BA492
