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SIG AIR M17 Pellet Pistol Reflex Sight Review And Installation

Before going any further, let’s make one thing clear about the SIG AIR M17 Pellet Pistol Reflex Sight. If you have a M17 ASP pistol, you need one of these!

The SIG AIR P320 M17 ASP Pellet Pistol is an excellent choice for plinking and training. It earned a score of 89% in our comprehensive HAM test review.

This SIG AIR M17 Pellet Pistol Reflex Sight is a huge asset to the M17. It provides elevation and windage adjustment capability, combined with multi-brightness control of the projected red dot. It’s delightfully small and light and makes accurate shooting the M17 so much more enjoyable!

In fact, this reflex sight is a tiny jewel of a product. Just compare it to the size of the battery that fits inside it, above.

The perceived quality of the product is outstanding in every way. The sight body is of metal and very well finished. It feels robust in spite of the small size. The view through the lens is crisp and clear, with a wide angle of view and sharp, bright red dot.

Elevation and windage adjustments are made by screw adjustments. The button at the front of the sight provides on/off and red dot brightness control.

Packaging is of iPhone quality and there’s a comprehensive set of parts and tools included with the sight – all for less than $50!

SIG AIR M17 Pellet Pistol Reflex Sight Review And Installation

Installing the SIG AIR M17 Pellet Pistol Reflex Sight requires that the existing rear iron sights and the sight plate they’re attached-to be removed. This is not difficult to do, but the only real gripe about this product is that the instructions leave rather a lot to the imagination.

To overcome this issue, we’ll cover installation in detail below. Just follow-along…

First, it’s necessary to remove the slide from the M17. Set the Safety to safe, and rotate the takedown lever. Of course, you remembered to remove the magazine before starting so that there’s no possible chance the pistol could fire unintentionally!

Then move the slide back, up and forward to disengage from the frame.

Next, we’re going to remove the black plate at the rear of the slide, together with the rear sight that’s mounted on it. To do this, turn the slide over and unscrew the two Phillips-head screws that hold the “Hammer” into place.

Here’s the result…

SIG AIR M17 Pellet Pistol Reflex Sight Review And Installation

Then select the replacement sight plate marked AIRGUN and attach the reflex sight to that with two of the supplied setscrews, using the Allen wrench included with the sight.

Clip the Reflex Sight and plate on top of the slide and re-position the rear sight in place on top. Now we’ll re-install the “hammer” assembly into the rear of the slide.

SIG AIR M17 Pellet Pistol Reflex Sight Review And Installation

Tightening the screws holds everything in place.

The slide is now re-installed on the frame.

SIG AIR M17 Pellet Pistol Reflex Sight Review And Installation

Now, all that remains is to sight-in the Reflex Sight. The only tricky part about this is that, first, it’s necessary to loosen the two screws at the rear of the sight. Yes, those ones that are pretty-well blocked by the replaced iron sights!

SIG includes a very nice little screwdriver for this purpose with the SIG AIR M17 Pellet Pistol Reflex Sight. However I have to say that I wasn’t able to rotate the screws with it and had to resort, instead, to an even-smaller jeweler’s screwdriver.

SIG AIR M17 Pellet Pistol Reflex Sight

Once these two screws have been loosened, the elevation and windage screws (located on the top and side of the Reflex Sight) can be adjusted. Mount that circular plastic plate onto the SIG screwdriver – this will give you guidance for how much to rotate the elevation and windage screws.

After sighting-in, re-tighten the two locking screws at the rear of the Reflex Sight.

Once your SIG AIR M17 Pellet Pistol Reflex Sight is sighted-in, you’ll find a use for one additional “unmentioned” part of this product. There’s a convenient cover that can be clipped over the sight to protect it when not in use. Nice!

This is one of those outstanding products that makes you wonder “how can they possibly sell it for this price?” Yes, it’s that good! As we said to start with, if you have a M17 ASP Pellet Pistol, you need one of these sights…

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SIG AIR M17 Pellet Pistol Reflex Sight