Bushnell RX100 Reflex Sight - 4 MOA Compact Red Dot Optic, Durable Aluminum Housing, 8 Brightness Settings, 5,000-Hour Battery Life, DeltaPoint Footprint Compatible

After ~400 rounds from my XDME 10mm, it's holding zero and I'm enjoying it. The glass is fairly low quality, and I'll probably scratch it up through cleaning over time. The dot itself is great, I've spent far more and returned similar sights that had steaks in the dot. If you have $50 and medium-low expectations, this is a great value.

This is a nice well-built red dot reflex sight. The battery slides in from the side so it's easy to replace and is a easy to find 2032. I mounted this on a colt 45 rifle with picatinny rail which is a no brainier easy to do. I bore sighted before going to range. I center adjusted at 15 yards the elevation was close so moved to 25 to zero in just couple shots. Then at 50 yards just a minor tweaking. I shot 50 rounds, and it stayed pinpoint accurate. I have been out several more times and this rifle has stayed in adjustment I haven't had to make any adjustments. The red dot has stayed nice and bright easy to pick up, it does wash out a bit if the early morning sun is coming at you but is still visible!

After reading mixed reviews online I decided to give this red dot a try anyway. It was one of the cheaper options using the DPP / shield rms footprint and I thought would be a good entry level red dot seeing how it's from a major company. There were other options available that were less expensive but all those were from non-name brand manufacturers (except one). I received two different units with two different problems. One dot was obviously an open box return and a little scratched. I would not have minded if I paid for a used item, but I did not, I paid for a new item. There was also some glue near the glass. The box on this unit was re-taped from factory or so it seemed. The second unit I received APPEARED not to power on... Until I realized that the real problem was that it would not mechanically zero for windage. The glass on this unit was clear of glue though. Both units are not sealed against dust or water intrusion. They claim ipx7 rating and I'm not sure how that's possible when there's a gaping hole you can see the wires through. The hole is between and aft of the mounting screws. What really irks me is that Tasco makes a NEAR identical red dot under license (making an assumption) for half the price. If I had known I'd have this much trouble I don't know if I'd have gone with the Bushnell. There are other options that are about $30 more. I ended up sending back the second unit the day after receiving it. Haven't returned the first used unit yet, trying to decide if it's worth fighting 'the man'. My feeling is that they make things so difficult for consumers that we just give up. I really wanted to give their RXS250 a try, it was just more than I could justify at the moment. Now I'm stuck with the used RXS100 and am kinda soured towards Bushnell even though I had good experience with their trs-25. TLDR; spend a bit more and get something else.

I’ll start with the cons first. The base of it is quite thiccc compared to my holosun, so therefore when it’s installed on a dovetail plate on my tx22, it’s not very instinctual to draw and have the dot on target due to how high off the bore axis it is. That said, since it’s on a .22, it still functions great, the dot is clear, still holds zero after 200rds. I was hitting bullseyes at 15 yards with no adjustments necessary which was impressive as it’s on a dovetail mount that I had to modify to fit the optic. Overall it’s good FOR THE PRICE. Just remember that this is only a $90 optic, not a $300+ optic. PS I appreciate the side door battery tray like my holosun. You should never have to remove an optic just to swap batteries and that’s one thing this bushnell has done well by. Update 1/8/23 I’ve used this extensively at this point, and though it mechanically has been flawless, I can’t get myself to accept the small sight window and how high the dot appears. You almost have to point downward in order to see it. It’s always been that way and I can’t get over it. Maybe on a riser it’d be ok, but on a pistol close to the bore axis. No Bueno.

Outstanding red dot! Works great on my Ruger Mark IV

Despite having the DPP footprint, this will NOT fit an Sig Sauer P320 (carry) X5 slide. This optic is about 1/16” too long to fit in the pre-made Sig footprint on the X5 slide; cannot & should not try to trim the optic to fit as it will jeopardize the integrity of the optic housing.

Bought the 1st one and liked it so much I ordered a 2nd one. The best selling point is that you do not have to remove the sight to replace the battery. Installation was very easy and so far the mounted unit works just fine. Other positive points are: Comes with a removable protective cover, was an easy overall mounting process, has positive adjustments for elevation and windage, easy sight brightness adjustments and is very easy to turn on and off. Good quality, lifetime warranty all also great items.

Sight worked great for 3 1/2 years. Recently, while shooting, it went out of alignment and was beyond limits for readjustment. Contacted Bushnell and they immediately sent out a replacement under their lifetime guarantee. Can't ask for more than that. Not sure why it failed but it did work properly for 3 1/2 years