WMD Guns NIB-X Firing Pin – AR-15 5.56/.223

The WMD Guns NIB-X Firing Pin is a direct replacement firing pin for AR-15 platform rifles chambered in 5.56 NATO and .223 Remington. Designed to improve reliability and longevity over standard mil-spec firing pins, this upgrade addresses wear and fouling issues that can cause misfires or light primer strikes in high-volume shooting environments. The NIB-X coating significantly reduces friction and carbon buildup, making post-range cleaning faster and extending maintenance intervals.

Constructed from hardened steel and finished with WMD's proprietary Nickel Boron-based NIB-X coating, this firing pin offers exceptional lubricity and corrosion resistance. The self-lubricating surface means less oil retention and cleaner operation. Installation is drop-in—no fitting or gunsmithing required. Simply remove your bolt carrier group, swap the firing pin, and reassemble. Compatible with mil-spec AR-15 bolt carrier groups.

• Part Type: Firing Pin
• Compatible Firearms: AR-15 (5.56 NATO/.223 Remington)
• Material: Hardened Steel
• Finish: NIB-X (Nickel Boron-Based Coating)
• Installation: Drop-In
• Includes: Firing Pin