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.
- .45 ACP Cal
- Ejection Port Opening Measurement : 0.61″
- Width X 2.30″ Length
- Will Match Up With Any Brand .45 ACP Lower Receiver Such As Spikes, Circle Quarter 10, Etc.
- US Made
- Manufactured From Solid Block Of Billet Aluminum
- Complete Kit Includes 9/45 Upper Receiver, .45 Complete BCG, & Charging Handle
- Anodized Black Finish on Handguard and Charging Handle
- T6 6061 Billet
- MIL-A-8625 TYPE III Anodizing
- Everything Needed To Complete .45 ACP Cal Upper
Wayne Hubbard –
Recently had the chance to get my hands on the AR-15 .45 ACP Cal Complete Upper Receiver Combo Kit, and it truly exceeded expectations. The craftsmanship and attention to detail are immediately noticeable—this kit feels solid and well-made, emphasizing real American quality. From the premium finish to the tight fit of each component, it’s clear that Guntec USA prioritizes durability and precision.
The .45 ACP caliber is a favorite for those who enjoy a powerful, manageable round that’s perfect for both range shooting and personal defense. The complete upper receiver combo kit simplifies the upgrade process, allowing for a seamless fit onto my existing AR-15 lower. It’s designed with versatility in mind, although it feels especially tailored for those who want a reliable, no-nonsense platform for target practice or even home defense situations.
Design-wise, the kit has a sleek, modern appearance, with features that make maintenance and cleaning straightforward. The materials used are robust, reducing concerns about wear over time. The upper’s machining is clean, with tight tolerances that ensure smooth cycling and minimal malfunctions. The caliber conversion offers excellent consistency shot after shot, which is essential for accurate shooting and confidence at the range.
One aspect I particularly appreciate is the value it offers. Quality, American-made accessories like this can often command a higher price, but Guntec USA manages to keep it affordable without sacrificing quality. It’s a worthwhile investment for any AR enthusiast looking to diversify their firearm’s capabilities or upgrade their existing setup.
Overall, this complete upper receiver combo kit delivers on both performance and reliability. It’s suitable for anyone who wants a high-quality, American-made accessory that can handle regular use without issue. Whether you’re customizing your firearm or building a new one from scratch, it’s definitely worth considering. While it’s a straightforward upgrade, that simplicity combined with excellent craftsmanship makes it stand out. For serious shooters who appreciate precision and durability, this AR-15 .45 ACP kit is a smart addition to your arsenal.