Guntec 5.5" AR-15 5.56 Complete Pistol Upper

✅ FREE SHIPPING

Upgrade your AR-15 pistol build with the compact power and reliability of the Guntec 5.5" 5.56 Compression Series Micro Pistol Upper. Proudly manufactured in the USA, this upper delivers premium craftsmanship, tactical performance, and customization potential in one streamlined kit. Please note: This kit is not assembled, allowing for a personalized configuration tailored to your exact needs.

✅ FEATURES & COMPONENTS

✅ 5.5" 5.56mm 1:5 Twist Contour Barrel (4150 Steel)
Precision-machined for accuracy and strength, this ultra-short barrel features a rapid 1:5 twist for enhanced stability and performance with a wide range of bullet weights.

✅ US-Made 4" M-LOK Compression Handguard (GT-4ALC)
Lightweight and durable, this M-LOK-compatible handguard includes a barrel nut and hardware—perfect for mounting lights, grips, or laser systems with ease.

✅ 5.56 Mil-Spec Upper Receiver
Designed for full compatibility with standard AR-15 components and platforms, ensuring consistent fit and function.

✅ 5.56 Charging Handle
Smooth, durable, and responsive—designed for ease of use and long-term reliability.

✅ Complete 5.56 Bolt Carrier Group (BCG)
A full BCG is included to ensure reliable cycling and optimal performance right out of the gate.

✅ Custom Short Gas Tube
Compact and efficient, this short gas system is optimized for micro builds, enhancing recoil management and operational reliability.

✅ .750 Low Profile Steel Gas Block
Durable and minimalistic, allowing for tight handguard clearance and reliable gas flow.

✅ Forward Assist Assembly
Provides extra assurance when chambering rounds, especially in adverse conditions.

✅ 5.56 Ejection Port Door Assembly
Ensures reliable ejection and keeps your upper protected from debris when closed.

✅ 1/2x28 A2 Birdcage Flash Hider
Classic flash suppression with proven recoil mitigation benefits for better control and visibility.

✅ 1/2x28 Crush Washer
Included for secure and aligned muzzle device installation.

Important Note:

This upper kit does not come pre-assembled, making it ideal for builders who want to fine-tune their setup or apply custom modifications.

Why Choose This Upper?

Whether you're building a CQB-ready pistol or a compact range companion, the Guntec 5.5" Compression Upper offers top-tier materials, unmatched compactness, and the freedom to build it your way — all with FREE SHIPPING included.