Technical Tuesday: Low Bore Axis

This week, we are looking at the bore axis of different polymer frames as it compares to the MR918 frame. One of the main pieces of feedback we are hearing from customers who have purchased the MR918 is how flat it shoots–what that means is there is not a lot of muzzle flip during firing.

One of the main differences as you start to compare polymer frames is the height of the bore as it relates to the hand. If you look at a Walther P99 or a Sig Sauer P320, it has a relatively high bore axis, in that you see there is a lot of slide and a lot of beavertail between the hand and the sights. If you then compare that to the MR918, you will see there really is not a lot of slide or beavertail between the hand and the sights. The location of the bore relative to the hand on the MR918 is very low–that is the principle of low bore axis. When the gun is firing, it doesn’t get the same amount of leverage in your hand. The principle of low bore axis means that you will get less muzzle flip.

What did we do to achieve a low bore axis when designing the MR918? A lot of the things we learned before designing this frame came from our time in the custom world, doing customization packages on Glock pistols. Through the process of that, we really learned what works well. If you look at how the bottom of the trigger guard is shaped, how high and relatively flat the beavertail is, how we have narrowed the frame and recontoured it to allow it to sit really low in your hand. We have also removed material from the trigger well, so if you have short fingers, maybe a young shooter or a female shooter, you will have an easier time of reaching the trigger on the MR918 than on other polymer framed pistols out there.

Our goal from the very beginning in designing this pistol was to control recoil, to bring the very best out of the custom world, and put it into a production gun.

So, go get your hands on one and we are confident you will feel the difference and you’ll be aware of that low bore axis on the MR918.

As always, we love to hear from you with questions and feedback–give us a call at 469.458.6808.

Technical Tuesday: Common Customer Service Questions about the MR918

This week, we’re going to answer the top three customer service questions we’ve received so far about the MR918.

The first is Assembly and Disassembly:
1. People seem to have a tendency to pull the slide back a bit too far when they are disassembling the MR918. Because the platform is somewhat similar to the Glock platform, it may be that folks familiar with Glocks aren’t used to our aggressive serrations on the MR918 and that allows for the slide to go back a bit further than you need during disassembly. When disassembling, your start point should be gun empty, no magazine, trigger to the rear. You only need to pull the slide back 1/16 of an inch, a really tiny amount, then pull down on the slide lock to release the slide from the frame.

2. Because of the way we’ve engineered our barrel to locking block and slide to slide rail fit, our top end is just a bit tighter of a fit than a Glock pistol, for example. Therefore, some folks have found, especially on a new gun, that the lugs will hang up a bit on the slide lock as you reassemble. If you get this issue, just give the slide lock the tiniest nudge downward and the slide will ease back onto the frame.

The second question we’ve seen a bit is “how do I get the backstraps off?” They do fit nice and tight on the dovetail, so let’s take a look at how to do that. First, be sure you’re using the tool that comes with your pistol. You will push on the pin from either side and slide it out. Once you remove the pin, you really do need to use the palm of your hand or thumbs to push it off the dovetail. It does take a bit of a push to get started, but once it gets started it comes off quite easily.

Lastly, the magazine well. We’ve had one customer break a magazine well plug when they installed it; we think maybe the plug was in upside down. When you put the plug in, you want to be sure it sits nice and flat into its recess. If it isn’t seated flat, you may break it off. So, once the plug is set, the magazine well hooks on from the front first, then it will snap into place int he back. At that point, you can reinstall your pins. The longer pin, that was already in the gun, goes into the backstrap side and the shorter pin from your kit goes into the bottom. Just a side note, as we’ve been asked this a bit, our magwell system is a proprietary system that is specific to our MR918 and will not fit any other after market magwells in the market.

Those are the top questions we’ve heard from customers so far, but if you have a different question we haven’t answered here, drop it in the comments or drop us a line at 469.458.6808.


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