AR-15 Line

AR-15 6.8 SPC II / .224 Valkyrie Complete Bolt Assembly | MPI Tested | 9310 Steel

Upgrade your AR-15 with the Moriarti 6.8 SPC II / .224 Valkyrie Complete Bolt Assembly, precision manufactured for reliable performance and long service life. Machined from premium 9310 steel, this bolt is shot peened and Magnetic Particle Inspected (MPI) to help ensure strength, durability, and dependable operation under demanding conditions.

Designed as a direct replacement for compatible AR-15 platforms, this complete bolt assembly is ready to install into your existing bolt carrier, making it an ideal choice for new builds, replacement parts, or backup components.

Compatible with both 6.8 SPC II and .224 Valkyrie platforms, this bolt provides builders with a versatile solution for two popular AR-15 calibers.

Features

Complete Bolt Assembly

• Ready to install
• Direct replacement for compatible AR-15 bolt carriers
• Precision machined

Premium Materials

• Manufactured from 9310 steel
• Shot peened for increased durability
• Heat treated for long service life

Quality Tested

• MPI (Magnetic Particle Inspected)
• Manufactured to Mil-Spec quality standards

Compatibility

This bolt assembly is compatible with:

• 6.8 SPC
• 6.8 SPC II
• .224 Valkyrie

Compatible with standard AR-15 bolt carriers designed for these calibers.

Why Choose a 9310 Bolt?

9310 steel is widely used in premium AR-15 bolt manufacturing due to its excellent combination of strength, toughness, and fatigue resistance. Combined with shot peening and MPI testing, it helps provide dependable performance for both recreational shooters and demanding AR builds.

Ideal For

• New AR-15 builds
• Replacement bolt assemblies
• 6.8 SPC II uppers
• .224 Valkyrie uppers
• Hunting rifles
• Competition rifles
• Spare parts kits

Key Takeaways

• Compatible with 6.8 SPC, 6.8 SPC II, and .224 Valkyrie
• Precision machined from 9310 steel
• Shot peened for enhanced durability
• MPI tested
• Complete bolt assembly
• Ready to install
• Fits compatible AR-15 bolt carriers

Frequently Asked Questions

Is this bolt compatible with .224 Valkyrie?

Yes. This bolt assembly is compatible with both 6.8 SPC II and .224 Valkyrie, as both cartridges use the same bolt face.

Does this bolt fit 6.8 SPC II?

Yes. It is compatible with 6.8 SPC and 6.8 SPC II platforms.

Is this a complete bolt assembly?

Yes. This is a complete bolt assembly ready to install into a compatible AR-15 bolt carrier.

Is the bolt MPI tested?

Yes. Every bolt is Magnetic Particle Inspected (MPI) to help verify structural integrity.

What material is the bolt made from?

The bolt is precision machined from 9310 steel, a premium material commonly used in high-quality AR-15 bolt manufacturing.

What does shot peening do?

Shot peening helps improve fatigue resistance and durability by strengthening the surface of the steel, contributing to longer service life.

Does this include the bolt carrier?

No. This listing is for the complete bolt assembly only. The bolt carrier is sold separately.

Is this a Mil-Spec bolt?

It is manufactured to Mil-Spec quality standards, using 9310 steel, shot peening, and MPI testing for dependable performance.

Can I use this as a replacement bolt?

Yes. It is an excellent replacement or spare bolt for compatible 6.8 SPC II and .224 Valkyrie AR-15 platforms.

Is this made in the USA?

Yes. The bolt assembly is manufactured to high-quality standards using premium materials for reliable performance.