Is the Shield RMS or RMS-C the Trijicon-Killer? No, not at all. Neither is the Leupold Deltapoint for that matter.
When we received the first RMS we installed it on a slide and ran it for a month in our testing. We carried it, we shot it, we used it in all sorts of ways a normal duty CCW weapon would be carried, and as a duty openly carried weapon would be carried an used. We did not abuse the weapon nor the optic. I will leave those S&M tactics to the clown princes of the gun world. I wrote up my findings in an article published on this blog and passed around in social media. Here is a more detailed description of my view on the Shield RMS.
CHOOSING THE RIGHT RED DOT SIGHT
1). For a light to moderate duty optic to be carried concealed day-to-day, on a smaller sized pistol it is an excellent choice. Not the best choice however for a hard duty combat weapon that will be shot thousands of times per month and endure the elements. For that secondary application nothing surpasses the Trijicon RMR.
2). Battery life has been quite good. The RMS installed on my Glock 43 Guttersnipe has yet to need a battery change. The other RMS installed on my SIG P-226 has had one battery change in two years. Although I have not experienced it personally, we have had three RMS units sent back for various issues. One had the same flickering dot issue as Type 1 RMRs. Not being able to fix it with a battery change, the unit went back to the Shield Warranty Center in Florida. Another man lost his battery tray and had to be sent a new one. The third one had a dead dot. But that is a very small percentage of returns compared to what we have imported.
3). The unit is not waterproof like the RMR. Our staff have actually gone swimming with Trijicon RMRs to see how they would fare. The RMR is in fact waterproof. The Shield RMS is not. When we dunked a Glock 43 with the RMS into a bucket of water, the unit shorted out. The Shield guys told me they are working on making the unit waterproof but as of now, it is "water resistant", which means sweat and a light rain...but no swimming. Neither is the new RMS-C by the way.
4). The glass is not as clear as Trijicon or Leupold, but far clearer than the myriad of cheaper chi-com optics on the market. The dot appears bright and easy to use. And zero has not shifted on any of our weapons.
The main advantages of the Shield RMS is in its smaller profile height and width than the RMR or Deltapoint Pro. Is this a big deal? For some it might be. Those wanting a red dot on a slide that is slimmer than a Glock 17 will benefit from this optic. Most of our installations are on SIG P-226 and 229, Glock 43, and S&W Shield Pistols. All weapons with a very slim slide top. Wider slides, like a standard Glock 9mm should have a Trijicon RMR and not a Shield RMS.
If the Shield RMS is used on a light duty, concealed carry weapon, it will served quite well and in my opinion, better than other alternatives on the market. But it is not a hard duty optic that replace the Trijicon RMR. If you select it for its role, you will not be disappointed.