The UPS man arrived yesterday bearing presents.  Enough presents to finish up the 9mm AR build.  I received the Rock River Arms upper receiver from Steve at ADCO.  And I must say hats off to Steve.  I ordered this on Sunday night and it arrived on Wednesday.  I figure he wasn’t working Sunday, processed it Monday and turned it around in two days. Impressive.  I was also impressed with their two day service for the magazine block.  I've decided to name him El Nino.  Here he is all dolled up:



And here he is next to Mr. Blasty for gratuitous gun porn err comparison purposes:



Got to Coal Creek this morning intent on putting him through his paces and he performed quite well.  I fired 160 rounds of Winchester White Box ammo without any gun malfunction whatsoever.  I was using 9mm AR magazines made by ProMag.  This rifle is a real pleasure to shoot.  It’s rather quiet compared to a 5.56Nato AR and has no recoil nor muzzle flip to speak of.  Highly recommended.  

Now, on to the actual range report.  I get there and borrow a rest since I plan on sighting it in.  Since it would be an indoor range gun, my plan was to sight it in at 10 yards with the EOTech and sight the irons in at 25.  I switched on the EOTech and it didn’t work.  Odd, since it worked yesterday though I recall the reticle flashing to indicate low battery.  I changed the battery and it still didn’t work.  That and the fact a job I thought I’d landed falling through convinced me that fate was conspiring against me to ruin my day.  And the irony of my Aimpoint v. EOTech Death Match weighed on me. I had one of the guys from Coal Creek look at it and his conclusion was That’s a busted EOTech.  I groaned.  He recommended I contact EOTech who has good customer service.  He left the range.  Then, it started working.  Odd, I thought but I was there to shoot.  So, I fired a few rounds that were low, which was expected since it came factory zeroed.  Once I got it sighted in, two 10-round groups looked like this:



I was perfectly satisfied with that.

Then, I wanted to play and shoot standing.  And the EOTech stopped working again.  Groan.  I removed the battery cover, checked contacts and was content it wouldn’t work again.  So, with open sights I was getting the same groups but they were about five inches lower than the point of aim, about what I expected.  At 25 yards, it was about two to three inches low, again what I expected.

I decided to hit the EOTech button again, and it worked.  I shot some more and, in the middle of squeezing a round, watched the reticle fade away very slowly.  It stopped working again.  That particular EOTech is less than two-years old and they come with a warranty.  It’s an older model without the protective shield, which I figured was perfectly fine on a range gun.  I have a call into customer service regarding how to proceed with fixing it.  I’ll let you know how that goes.

Which model Eothingy ? If it is the Smaller battery one. Take out the batteries and hold down the buttons. Let it sit for a lil time then try it again. If that does not work call them about it. they will take care of U. I would get rid of the model and get the AA one .

It's a model they no longer make, that I know.  No protective cover.  I've tried the fixes at their site FAQ and none worked.  I have the 552 AA model on my 5.56 (pictured above).

Thanks, Tuna.  I did that (apparently, last time I didn't push the buttons) and now it works.  Most excellent.

Quoted: Thanks, Tuna.  I did that (apparently, last time I didn't push the buttons) and now it works.  Most excellent.

NO problem. I have seen this alot with those models. OUT. Tuna

Tag for EOTech reset instuctions.