I talked to Trijicon Tech Support earlier this year. The "scoop" on the street was that the RMR Type 1 would "Shoot out" or have issues after 25K rounds or so. Before I purchased one for my CORE M&P, I wanted to find out. I also wanted to be able to Co-Witness and the RMR was the ONLY one that would. The Original Deltapoint would.....but then Leupold redesigned it and the Ver2 would not.
This is what Trijicon told me and I have done this.
The real issue was not "Shooting out", but in the battery connection. There are many "fixes" on the forums. There is also one company that makes a thin plate with a "bump" or raised circle on it. That is to push upward on the battery to improve the connection.
Trijicon will rework ANY Type 1 and put in the Type 2 battery compartment for FREE....for the life of the RMR....it is NOT an original purchaser item. I purchased the Type 1 from Cabela's, and it was on sale from their regular low price. I used Raise.com and got an additional 15% off. I sent the sight to Trijicon and they turned it around in about 3 weeks. The tech said that there were NO issues in the electronics on the Type 1. It was the design of the battery compartment and that it was, for them, an easy retrofit and that they had not had any issues with a Type 1 after the upgrade.
BTW, Cabela's purchased all the Type 1 inventory.....about 28,000 RMR Type 1's. They have totally sold out....so other folks scoffed up on the lower price. I think that I was in for around $300 after the first Cabela's discount and the Raise....and I sold the "Freebie" mount on Ebay....
Just passing this along....if you latch on to a "good" Type 1, then send it back and it will be as robust as the Type 2....just does not have some of the high techie features.