Guntec USA has been manufacturing AR-15, AR-308 and AR 9mm accessories since 1989. Our goal is to distribute excellent quality, at an economical value.
- All US Made
- 5.56 Ejection Door Assembly
- 5.56 Complete Lower Parts Kit
- AR-15 Pistol Buffer Tube Kit (ARPISTUBE)
- 7.5″ 5.56mm 1:7 Twist M4 4150 Barrel
- Anodized Black Finish On Aluminum Parts
- Everything Included, Except The Lower
- 5.56 Upper Receiver
- 5.56 Charging Handle
- 7″ Ultralight Series M-LOK Handguard With Barrel Nut & Hardware (GT-7MLK)
- Pistol Length Gas Tube
- 1/2 X 28 Crush Washer
- Kit Does Not Come Assembled
- 5.56 Complete BCG
- Forward Assist Asssembly
- Ultralight Series Aluminum Skeletonized Pistol Grip (ULS-PG)
- Steel Low Pro .750 Gas Block
- 1/2 X 28 Micro Muzzle Comp (M-COMP)
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Jack Sharp –
The AR-15 5.56 Cal Complete Ultralight Series Pistol Kit (No Lower) caught my attention due to its impressive reputation for quality and performance. Having recently assembled my own lightweight build using this kit, I can honestly say it surpasses expectations in both craftsmanship and design. The materials feel durable yet lightweight—perfect for anyone seeking a versatile, portable option without sacrificing reliability.
One of the standout features is the finish on the upper and barrel; it feels sturdy and well-machined, with precise tolerances that contribute to smooth operation. The ultralight design truly makes a difference, especially during extended shooting sessions or when carrying the pistol on hikes or tactical drills. The assembly process was straightforward, thanks to clear instructions and well-fitting components. While the kit doesn’t include a lower, that gave me the flexibility to customize my setup with a lower receiver of my choice, which is a definite plus.
The craftsmanship reflects American-made excellence, and the attention to detail is evident in the milling and finish quality. The compatibility with various aftermarket components is excellent—allowing for further customization on optics, handguards, or stocks if desired. I also appreciate that this kit is designed with durability in mind, holding up well under regular use.
Value-wise, this kit offers a great balance between cost and high-end features. For those interested in building a lightweight, reliable pistol for sport shooting, home defense, or training, it’s a smart investment. Just keep in mind that since it’s a complete upper but no lower included, you’ll need to have or purchase a compatible lower separately.
All in all, the AR-15 5.56 Cal Complete Ultralight Series Pistol Kit (No Lower) is a solid choice for enthusiasts looking to build a custom, lightweight pistol with the quality assurance of American manufacturing. It delivers excellent fit and finish, reliability, and customization potential. I’d recommend it to anyone serious about creating a tailored firearm experience—definitely worth considering if you want a premium, lightweight setup.