Hello everyone! I’m happy to announce that Gordy Gritters and myself have just launched our long-awaited Accurizing the AR Platform online training. Here’s more information about this course: From our landing page: AR rifles can be made to be extremely accurate – want to learn how this can be done? Gordy Gritters with Extreme Accuracy […]
Tag: Lower Receiver
AR-MPR: Build Part 7 – Lower – Buttstock and Mating Upper Lower
In this, the final AR-15 assembly video, we’ll walk through the installation of the takedown pin and the buttstock assembly. Finally, we’ll put the upper and lower together for the first time and establish basic functionality (formal function check to follow in subsequent posts). After all of the planning and work that went into getting […]
AR-MPR: Build Part 6 – Lower – Trigger Grip and Safety
Continuing our way through the lower build steps, in this video, we’ll look at installing the Geissele national match trigger assembly, the trigger guard, the safety selector lever assembly, and the pistol grip. Next, it’s on to the stock and final touches! Thanks,Gavin
AR-MPR: Build Part 5 – Lower – Magazine Catch Bolt Catch Pivot Pin
In this video, we’ll start the assembly of the lower by walking through the installation of the magazine catch, the bolt catch, and the pivot pin. You’ll see a trick for installing the pivot pin that makes use of a dulled razor blade, and a modified section of drill rod. From the video, in this […]
AR-MPR: Lower Assembly Parts List
In my last AR-MPR post, I gave an overview of the parts that will be used to assemble the AR-MPR upper assembly. In this post, we’ll take a look at the rest of the rifle- the lower assembly (OK, there’s also optics and accessories, we’ll but we’ll cover those later). I started this project with […]


































































