The Spikes Tactical ST-15 LE Complete Upper (brand part number STU5025-R9S) brings the company’s fully mil-spec-compliant law enforcement upper line to any shooter’s budget. Built by Spikes Tactical, this 16-inch 5.56 NATO upper runs a 1:7 twist Mil-Spec barrel with an M4 profile, a carbine-length gas system, and Spikes’ ST Micro low-profile gas block on a .750-inch diameter gas seat. It ships complete with a Spike’s Tactical Mil-Spec M16 bolt carrier group, a 9-inch BAR2 free-float M-LOK handguard, and an A2 flash hider, giving builders a ready-to-shoot upper once mated to a lower.

Key Specifications

• Barrel length is 16 inches, chambered in .223 Remington/5.56 NATO.
• Twist rate is 1:7, built to Mil-Spec dimensions.
• Barrel profile is M4 with a black phosphate finish.
• Runs a carbine-length gas system with a .750-inch diameter gas seat.
• Includes a Spike’s Tactical Mil-Spec M16 bolt carrier group.
• Handguard is the 9-inch BAR2 free-float M-LOK rail system.
• Fitted with a standard A2 flash hider muzzle device.
• Sights are not included, ready for the optic of your choice.
• Ships as a complete, ready-to-shoot upper once mated to a lower.

Frequently Asked Questions

Does this upper include a charging handle? It ships with a Mil-Spec M16 bolt carrier group; confirm charging handle inclusion on the current listing before ordering.

Is this upper optic-ready? Yes, it ships without sights so you can mount the optic of your choice directly to the flat-top rail.

Buy the Spikes Tactical ST-15 LE 16-inch Complete Upper

Get law enforcement-grade mil-spec quality at a price built for any budget. Order this AR-15 upper from our Lubbock, Texas gun shop for fast, insured shipping to your door.