Stern Defense MOD5 Upper | 9mm | 6″ Barrel

The Stern Defense MOD5 upper is a complete 9mm AR-style upper built around a 6″ steel barrel with a 1:10″ twist. It ships with a bolt installed and features a Glock-cut upper receiver for compatibility with Glock-cut lowers or Stern adapters. The 8″ MOD5 M-LOK handguard and .5-36 threaded muzzle make this upper suitable for a range of pistol-caliber rifle and pistol builds.

Common applications include pistol-caliber carbine builds and dedicated range/training platforms where compact handling and pistol-caliber ammunition are desired.

Product Specifications

• The brand is Stern Defense.
• The model is the MOD5 upper.
• The caliber is 9mm.
• The barrel measures 6″ in length.
• The twist rate is 1:10″.
• The barrel material is steel.
• The barrel finish is melonite.
• The muzzle is threaded to .5-36.
• The assembly includes a bolt.
• The handguard is an 8″ MOD5 M-LOK configuration.
• The upper is Glock-cut and ready for Glock-cut lowers or use with Stern adapters.
• The package references an SD HBC 9MM blast can.
• The product is Made in the USA.
• Sales restriction noted: No direct ship to California.
• The UPC is 860141001577.

This MOD5 upper is a practical choice for builders who want a compact, purpose-built 9mm upper with factory compatibility for Glock-style lowers and Stern adapters. Its melonite-finished steel barrel and M-LOK handguard offer a balanced combination of durability and modularity for range work and PCC-style projects.