AR15 Big Bore parts 450 Bushmaster 458 SOCOM complete uppers AR-15 parts accessories


J-5 Tactical Supply

AR-15 Parts AR-15 .450 Bushmaster .458 SOCOM AR-15 Upper Receivers


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AR-15 parts Complete Uppers 450 Bushmaster 458 SOCOM AR15 parts accessories

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J-5 Tactical Supply

AR-15 parts and complete upper receivers that are high quality and American made is what we are all about. A family owned company, J5 Tactical Supply works hard at providing you with all you need for your next build. Specializing in Big Bore Calibers, we carry complete upper receivers and upper parts for .458 SOCOM, .450 Bushmaster and other AR-15 calibers. We have built relationships with many of the industries manufactures so if you’re looking for something we don’t have listed, let us know, and we will do what we can to get it for you.

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From The Blog

  • 3 Powerful AR-15 Cartridges for Survival Use

    This article, “Super Size Survival Cartridges” originally ran in the October 2016 issue of Shooting Illustrated magazine. by Bryce M. Towsley – Wednesday, August 1, 2018 In a survival situation, with guns, food, shelter or just about anything else, it’s always a good idea to have plenty of backup. For example, eating MREs will get […]
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  • 5 Reasons to Hunt with an AR15 By Bartt Brenton, President of Brenton USA The popularity of the AR-15 style rifle is at an all-time high. More people are owning and shooting AR style rifles than ever before. I believe this is partly due to the semi-auto nature of the rifle and the affordability of plinking ammo. Beginning around 2000-2005, many […]
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  • Big-Bore AR Cartridges

    SUBSCRIBE by Bryce M. Towsley – Wednesday, June 22, 2016 When it comes to dispatching game with authority—and a single shot—nothing gets the job done quite like the big, heavy bullets available in chamberings such as these three, which all fit in a standard AR-15-size platform. I have a simple test when considering cartridges for […]
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  • Why the AR-15 is America’s Most Popular Rifle

    There are many misconceptions to the AR-15. Two of the most notable are: AR stands for “Assault-Rifle” and they are the same as fully-automatic military firearms. Today, the AR-15 has soared in popularity amongst gun owners, due to a wide-range of factors. It is customizable, adaptable, reliable and accurate that can be used in sport […]
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What Our Customers Say

Just coming off my first buying experience and it was great. Had a quick question regarding shipping of my purchase and I received prompt, accurate response from the J5 cust service team. I will use them in the future. John C.
You are awesome! Thanks for answering all of my questions and bending over backwards for me. J. Elliott