Springfield Armory Saint Victor B5 STV916556B-B5 | 5.56 16in

The Springfield Armory Saint Victor B5 (STV916556B-B5) is a purpose-built modern sporting rifle chambered for 5.56x45mm NATO with a 16-inch Chrome Moly Vanadium barrel finished in Melonite for corrosion resistance. It combines a free-float M-LOK handguard and B5 Systems furniture with upgraded internals such as a nickel-boron coated trigger and enhanced bolt carrier group. Recommended optic under $1,000: a fast 1-8x variable (for example, the Vortex Strike Eagle 1-8×24) pairs well for both close-quarters and mid-range engagement on this platform.

Product Specifications

• The UPC is 706397935511.
• The caliber is 5.56x45mm NATO (.223 Rem).
• The barrel measures 16 inches and is described as Chrome Moly Vanadium with a Melonite finish.
• The barrel twist rate is 1:8″.
• The handguard is a 15-inch full-length aluminum free-float design with M-LOK attachment points.
• The gas system is a mid-length direct impingement arrangement with a pinned low-profile gas block.
• The upper and lower receivers are made from 7075 T6 aluminum with a Type III hardcoat anodized finish.
• The stock is a B5 Systems Enhanced SOPMOD adjustable unit.
• The trigger is a nickel-boron coated flat GI-style fire control.
• The bolt carrier group is an Enhanced M16 BCG with 9310 steel bolt, HPT/MPI and Melonite treatment.
• The muzzle device is an SA multiport muzzle brake.
• The rifle includes low-profile spring-loaded flip-up front and rear sights.
• The package ships with one 30-round Magpul PMAG Gen M3 magazine included.
• The safety selector is ambidextrous.
• The muzzle thread pattern is 1/2×28.

This Saint Victor B5 configuration provides a well-balanced mix of factory-upgraded components and practical ergonomics. The combination of a free-float M-LOK handguard, upgraded BCG and nickel-boron trigger gives a solid starting platform for optics and accessory setups, making the rifle a versatile choice for competitive MSR work or dedicated range training. Its component set emphasizes serviceability and modularity while leaving room for user customization.