Spike's Tactical 5.56 NATO Upper Receiver Assembly 14.5" Pinned & Welded

This Spike's Tactical complete upper receiver assembly is chambered in 5.56 NATO and features a 14.5-inch barrel with a pinned and welded muzzle device to meet the legal 16-inch minimum barrel length requirement. This configuration allows shooters to achieve a compact carbine-length platform while remaining compliant with NFA regulations. Compatible with mil-spec AR-15 lower receivers.

The upper is built with a forged aluminum receiver and includes a free-float handguard for improved accuracy and thermal management. The pinned and welded muzzle device is permanently attached—this upper cannot be disassembled for muzzle device changes without cutting. Barrel material and gas system length are optimized for reliable 5.56 NATO and .223 Remington performance. Ready to install on any mil-spec lower receiver.

• Caliber: 5.56 NATO
• Type: Complete Upper Receiver Assembly
• Compatible Lower: Mil-spec AR-15
• Barrel Length: 14.5" (pinned & welded to 16")
• Material: Forged aluminum receiver
• Handguard: Free-float rail
• Includes: Barrel, bolt carrier group configuration varies by model
• Installation: Drop-in to mil-spec lower, two takedown pins

Note: Muzzle device is permanently attached via pinning and welding. Removal requires cutting and may affect legal compliance.