Category: AR-MPR General

AR-MPR – OnTarget Software – Measure Groups Easily

For AR-MPR, I’m chasing a .5 – .75 MOA accuracy goal. Initially, I started with 3-shot groups when I function tested the rifle, but have upgraded the challenge to “consistent 5-shot groups at .5 – .75 MOA”. In order to track my progress, I’ve taken a hint from Paul over at – use the […]

AR-MPR 1st Range Report – Unexpected Results

  The mission for the first range trip with the AR-MPR rifle was to really do two things: First, it was about function checking the rifle. Second, it was about sighting in the Nikon Monarch 6-24x50mm riflescope. A third and less important goal was to see how accurate I could shoot this rifle based on […]

AR-MPR – Upper Receiver Parts List

The AR-MPR Upper Assembly shown here during test fitting of components – Click here for larger view – Images Copyright 2010 Ultimate Reloader Before we actually start with the build process for the AR-MPR rifle, I want to post some information about the parts and tools that are required for such a build. In this […]

AR-MPR: Planning your AR-15 build

Planning an AR-15 build can be more than a bit overwhelming! In this video I’ll walk you through some of the high-level decisions that you’ll need to make in order to get your AR-15 plans underway. Did I miss anything important here? Please leave a comment if you have something to add. Next, we’ll take […]

AR-MPR: .223 Remington -vs- 5.56 NATO – What’s the skinny?

One of the first things people ask when it comes to the AR-15 platform is: “What exactly is the difference between .223 Remington and 5.56 NATO (5.56mm x 45mm), and why should I care?”. Here, I’ll give you the essential facts related to the differences between these cartridges and the corresponding chamber dimensions. This understanding […]

AR-MPR AR-15 Project Kick-Off

It’s official guys- we’re going to get up close and personal with the AR-15 here on! This video will give you an overview of a long-term project I’ll be working on here on ultimatereloader which will include a complete from-scratch precision AR-15 build, .223/5.56 precision handloading processes, and finally mass production of .223/5.56 ammo […]

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