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
- 9mm Upper Receiver
- US 6.75″ Ultralight Series M-LOK Handguard
- Crush Washer
- Kit Does Not Come Assembled
- 9mm Complete BCG
- With Barrel Nut & Hardware (GT-675MLK)
- 1/2 X 36 9mm “Hellfire” Muzzle Device
- Complete Upper Kit Contains:
- Mil-Spec Charging Handle
- 7.5″ 9mm 1:10 Twist Contour 4150 Barrel
- Anodized Black Finish On Aluminum Parts
Lambert –
Absolutely impressed with the AR-15 9mm Cal Complete Upper Kit W/ Hell Fire Muzzle Device. Having spent a good amount of time customizing and upgrading my rifle, this kit stands out for its craftsmanship and attention to detail. The quality of the materials is immediately noticeable — the upper receiver feels solid and well-machined, reflecting the high standards of American manufacturing that GunTecU.S.A. prides itself on.
The finish on the component parts is smooth and durable, showing no signs of rough edges or imperfections. The design is sleek, with a clean aesthetic that complements my existing setup seamlessly. The inclusion of the Hell Fire Muzzle Device adds not only a functional upgrade but also an aggressive, tactical look that I’ve gotten compliments on at the range. It functions smoothly with minimal recoil, which enhances overall shooting experience — especially considering the 9mm caliber, which can sometimes feel snappy in smaller builds.
Assembly was straightforward, thanks to clear instructions and precision-fit parts. The bolt carrier and upper have integrated nicely with my existing lower, and I appreciate the attention to maintaining tight tolerances. Shooting is reliable and consistent, with no jams or misfires so far, which speaks highly of the quality control. The kit offers excellent value, considering it includes all essential components, making it a convenient upgrade from stock or less complete options.
For anyone serious about a reliable 9mm AR build, this complete upper kit is a solid choice. It combines performance, durability, and style — all made in the USA, which is a big plus for supporting local industry. While it may be slightly higher priced than some generic options, the confidence you gain from knowing the parts are high-quality makes it worth the investment.
Overall, this product exceeded my expectations. It’s a reliable, well-made upgrade that enhances both the look and function of my AR-15. Whether you’re a seasoned shooter or a hobbyist wanting to improve your rifle, I’d recommend giving this kit a serious look. It’s a premium option that delivers on its promises and adds a lot of value to your firearm collection.
Ted King –
Absolutely impressed with the AR-15 9mm Cal Complete Upper Kit W/ Hell Fire Muzzle Device. Having spent a good amount of time customizing and upgrading my rifle, this kit stands out for its craftsmanship and attention to detail. The quality of the materials is immediately noticeable — the upper receiver feels solid and well-machined, reflecting the high standards of American manufacturing that GunTecU.S.A. prides itself on.
The finish on the component parts is smooth and durable, showing no signs of rough edges or imperfections. The design is sleek, with a clean aesthetic that complements my existing setup seamlessly. The inclusion of the Hell Fire Muzzle Device adds not only a functional upgrade but also an aggressive, tactical look that I’ve gotten compliments on at the range. It functions smoothly with minimal recoil, which enhances overall shooting experience — especially considering the 9mm caliber, which can sometimes feel snappy in smaller builds.
Assembly was straightforward, thanks to clear instructions and precision-fit parts. The bolt carrier and upper have integrated nicely with my existing lower, and I appreciate the attention to maintaining tight tolerances. Shooting is reliable and consistent, with no jams or misfires so far, which speaks highly of the quality control. The kit offers excellent value, considering it includes all essential components, making it a convenient upgrade from stock or less complete options.
For anyone serious about a reliable 9mm AR build, this complete upper kit is a solid choice. It combines performance, durability, and style — all made in the USA, which is a big plus for supporting local industry. While it may be slightly higher priced than some generic options, the confidence you gain from knowing the parts are high-quality makes it worth the investment.
Overall, this product exceeded my expectations. It’s a reliable, well-made upgrade that enhances both the look and function of my AR-15. Whether you’re a seasoned shooter or a hobbyist wanting to improve your rifle, I’d recommend giving this kit a serious look. It’s a premium option that delivers on its promises and adds a lot of value to your firearm collection.
Arthur Burns –
Absolutely impressed with the AR-15 9mm Cal Complete Upper Kit W/ Hell Fire Muzzle Device. Having spent a good amount of time customizing and upgrading my rifle, this kit stands out for its craftsmanship and attention to detail. The quality of the materials is immediately noticeable — the upper receiver feels solid and well-machined, reflecting the high standards of American manufacturing that GunTecU.S.A. prides itself on.
The finish on the component parts is smooth and durable, showing no signs of rough edges or imperfections. The design is sleek, with a clean aesthetic that complements my existing setup seamlessly. The inclusion of the Hell Fire Muzzle Device adds not only a functional upgrade but also an aggressive, tactical look that I’ve gotten compliments on at the range. It functions smoothly with minimal recoil, which enhances overall shooting experience — especially considering the 9mm caliber, which can sometimes feel snappy in smaller builds.
Assembly was straightforward, thanks to clear instructions and precision-fit parts. The bolt carrier and upper have integrated nicely with my existing lower, and I appreciate the attention to maintaining tight tolerances. Shooting is reliable and consistent, with no jams or misfires so far, which speaks highly of the quality control. The kit offers excellent value, considering it includes all essential components, making it a convenient upgrade from stock or less complete options.
For anyone serious about a reliable 9mm AR build, this complete upper kit is a solid choice. It combines performance, durability, and style — all made in the USA, which is a big plus for supporting local industry. While it may be slightly higher priced than some generic options, the confidence you gain from knowing the parts are high-quality makes it worth the investment.
Overall, this product exceeded my expectations. It’s a reliable, well-made upgrade that enhances both the look and function of my AR-15. Whether you’re a seasoned shooter or a hobbyist wanting to improve your rifle, I’d recommend giving this kit a serious look. It’s a premium option that delivers on its promises and adds a lot of value to your firearm collection.
Lloyd Johnson –
The AR-15 9mm Cal Complete Upper Kit W/ Hell Fire Muzzle Device is truly a game-changer for anyone looking to enhance their AR-15 platform. From the moment I unboxed it, it was clear that this kit is built with quality and precision in mind. The upper has a solid, well-machined finish that exudes durability, and it fits seamlessly onto my existing lower. The assembly was straightforward, which is always a plus for those who like to customize and upgrade themselves.
One of the standout features of this kit is the inclusion of the Hell Fire muzzle device. Not only does it add an aggressive look to the firearm, but it also noticeably improves recoil management and noise reduction—a welcomed benefit during rapid fire sessions or range days. The 9mm barrel delivers exceptional accuracy, and the overall build feels sturdy, indicating this will hold up well over time. It’s evident that American manufacturing standards are high, given the attention to detail and quality control.
The complete upper is also cost-effective considering the high-quality components involved. It comes ready to go with everything needed to get shooting, which makes it a great choice for both seasoned AR-15 enthusiasts and newcomers alike. The design maintains a sleek, streamlined profile without sacrificing performance or reliability. I appreciate how easy it was to clean and maintain afterward, thanks to the smooth finishes and tight tolerances.
Functionality has been flawless during testing—feeding, cycling, and ejecting all operate smoothly with 9mm rounds, which is often a tricky caliber to get dialed in. It’s a versatile upgrade that can turn your AR-15 into a reliable 9mm carbine for home defense, target shooting, or competitions.
Overall, this AR-15 9mm Cal Complete Upper Kit W/ Hell Fire Muzzle Device offers excellent value for the quality and performance it delivers. It’s clear that American craftsmanship goes into each component, making it a trustworthy addition to any firearm collection. Highly recommended for those looking to diversify their shooting options with an easy-to-install, high-quality upgrade.
David Daniels –
Absolutely impressed with the AR-15 9mm Cal Complete Upper Kit W/ Hell Fire Muzzle Device. Having spent a good amount of time customizing and upgrading my rifle, this kit stands out for its craftsmanship and attention to detail. The quality of the materials is immediately noticeable — the upper receiver feels solid and well-machined, reflecting the high standards of American manufacturing that GunTecU.S.A. prides itself on.
The finish on the component parts is smooth and durable, showing no signs of rough edges or imperfections. The design is sleek, with a clean aesthetic that complements my existing setup seamlessly. The inclusion of the Hell Fire Muzzle Device adds not only a functional upgrade but also an aggressive, tactical look that I’ve gotten compliments on at the range. It functions smoothly with minimal recoil, which enhances overall shooting experience — especially considering the 9mm caliber, which can sometimes feel snappy in smaller builds.
Assembly was straightforward, thanks to clear instructions and precision-fit parts. The bolt carrier and upper have integrated nicely with my existing lower, and I appreciate the attention to maintaining tight tolerances. Shooting is reliable and consistent, with no jams or misfires so far, which speaks highly of the quality control. The kit offers excellent value, considering it includes all essential components, making it a convenient upgrade from stock or less complete options.
For anyone serious about a reliable 9mm AR build, this complete upper kit is a solid choice. It combines performance, durability, and style — all made in the USA, which is a big plus for supporting local industry. While it may be slightly higher priced than some generic options, the confidence you gain from knowing the parts are high-quality makes it worth the investment.
Overall, this product exceeded my expectations. It’s a reliable, well-made upgrade that enhances both the look and function of my AR-15. Whether you’re a seasoned shooter or a hobbyist wanting to improve your rifle, I’d recommend giving this kit a serious look. It’s a premium option that delivers on its promises and adds a lot of value to your firearm collection.