Stern Defense MOD4 9mm Upper | 16.1 inch Barrel | 15 inch M-LOK

The Stern Defense MOD4 9mm upper pairs a 16.1 inch Melonite-finished steel barrel with a 15 inch MOD4 M-LOK handguard on a Glock-cut assembled upper. It includes a Stern Defense SD BU9 Glock-cut bolt, an SD CH1 enhanced charging handle, dust cover and forward assist. The barrel features a 1:10 twist rate and a .5-36 muzzle thread and is made in the USA.

Product Specifications

• The caliber is 9mm.
• The barrel length is 16.1 inches.
• The rate of twist is 1:10.
• The barrel material is steel.
• The barrel finish is Melonite.
• The handguard is a 15-inch MOD4 M-LOK design.
• The upper is Glock-cut and configured for Glock-cut lowers or use with Stern adapters.
• The assembly includes a SD BU9 Glock-cut bolt.
• The charging handle is a SD CH1 enhanced unit with laser engraving.
• The muzzle is threaded .5-36 for muzzle devices or brakes.
• The package includes a 15-inch M-LOK rail with barrel nut and mounting hardware.
• The package includes an included SCB 9 compensator brake.
• The assembled upper includes a dust cover and forward assist.
• The product is Made in the USA.
• The UPC is 860141001553.

This MOD4 upper provides a turnkey 9mm carbine platform suitable for range training and pistol-caliber carbine competition. Its 16.1 inch Melonite barrel and 15 inch M-LOK handguard give a durable, accessory-ready foundation for shooters who want a Glock-cut upper with complete hardware from Stern Defense.