Stag 15 Nitride Bolt Carrier Group, 5.56 NATO / 223 Rem, Left Handed
5.56 NATO, 223 Rem, 300 BLK, 350 Legend
The Stag 15 Nitride Bolt Carrier Group is a rugged, precision-machined assembly designed specifically for Stag rifles and uppers configured for left handed ejection. Compatible with 5.56 NATO, .223 Remington, 300 Blackout, and 350 Legend, this BCG is a versatile, drop-in upgrade or replacement that’s ready for duty in a wide range of AR-15 platforms. Whether you’re building a new upper or replacing a worn-out carrier group, this component ensures reliable function and long-term performance under demanding conditions.
Each carrier is manufactured from Mil-Spec 8620 steel and undergoes the salt bath nitride treatment, also known as QPQ (quench-polish-quench). This advanced surface hardening process results in a smoother finish that’s extremely resistant to corrosion, wear, and carbon fouling. It’s also easier to clean and performs reliably even when lubrication is less than ideal—a key benefit for shooters operating in austere or high-volume environments.
The bolt is crafted from shot-peened Carpenter 158 steel for optimal strength and durability, and it’s Magnetic Particle Inspected (MPI) to verify the material integrity. All critical components, including the extractor and gas key, are installed and properly staked, ensuring long-lasting performance and minimal maintenance.
This left handed bolt carrier group is fully assembled and ready to drop into any AR-15 upper receiver built for left-side ejection. It’s the ideal choice for left handed shooters or anyone running a Stag Arms upper who demands a high-quality BCG built for long-term reliability and performance.
If you’re unsure whether this BCG is compatible with your setup or need guidance selecting the right components, our expert team is here to help. We’re committed to ensuring you get the most from your AR-15 build or upgrade.
Product Information
| Manufacturer | Stag Arms |
|---|---|
| Platform | AR15 |
| Caliber | 223 Rem, 300 Blackout, 350 Legend, 5.56 NATO |
| Carrier Material | 8620 Steel |
| Bolt Material | 9310 Steel |
| Finish | QPQ Nitride |
| Color | Black |
| Compatibility | Standard AR15 components |
| Features | MPI Inspected, Shot Peened, FA Serrations |
| Made in USA | Yes |
We fully comply with all federal, state, and local laws regarding the sale of restricted products. We do not market or sell to prohibited jurisdictions, and any attempts to induce illegal activity, including by law enforcement or government agencies, will be rejected and may be reported. All orders are subject to legal verification, and those in violation will be canceled. By using this site, you confirm compliance with all applicable laws.
Arm or Ally is a stocking dealer for all Aero Precision, Faxon Firearms, Ballistic Advantage, HOLOSUN, Toolcraft, Elftmann Tactical, Timney, TriggerTech, HIPERFIRE and was named the #1 Overall E-Commerce Dealer for Aero Precision Products in 2020!
See our growing inventory of AR Parts, Parts for Glock and Reloading Components.
