STT 11.5" Everything But Lower Receiver Kit
Complete AR-15 upper assembly kit with 11.5" barrel, bolt carrier group, and all components except lower receiver. Ready for assembly with quality construction.
STT 11.5" Upper Assembly Kit
This comprehensive AR-15 build kit provides everything you need to complete a functional rifle—except the lower receiver, which remains regulated as a firearm.
What's Included
- 11.5" Barrel: Compact profile ideal for close-quarters work, home defense, or specialized applications
- Bolt Carrier Group: Complete and ready to function
- Upper Receiver: Precision machined for reliable operation
- Handguard: Integrated rail system for mounting optics and accessories
- Gas System: Properly tuned for the 11.5" barrel length
- All Hardware: Springs, pins, and components needed for assembly
Why Choose This Kit
Building your own AR-15 is a rewarding way to understand your firearm. This kit eliminates guesswork by providing quality components engineered to work together. The 11.5" barrel strikes an excellent balance between velocity and maneuverability.
Assembly Notes
You'll need to source a lower receiver separately—the regulated component that requires proper licensing and background checks. Assembly requires basic gunsmithing knowledge or professional help. Detailed instructions are recommended for first-time builders.
Specifications
- Barrel Length: 11.5"
- Caliber: 5.56 NATO/.223 Remington
- Configuration: Direct impingement gas system
This is an excellent foundation for a compact, versatile rifle platform.
