Tag Archives: Optics

Optic of the week: AK sights

Ok, so this week is sort of a cheat for me as these are iron sights and not an optic.

I’ve found that people unfamiliar with the AK tend to be surprised at how narrow the rear notch is.  AK sights can be quite fast to use if you are used to them, but I have seen novices struggle to line them  up.  It is not uncommon to see AK owners here in the states widen the rear notch.

The AK rear sight is adjustable for distance.

You zero by adjusting the front sight.  It is adjustable for elevation and windage.

You will need a tool to adjust AK sights.  Adjusting elevation requires rotating the front sight post.  1 full turn of the front sight post is about 8 MOA.  You could turn the front sight post with needle nose pliers, but it would be better to use a tool made for it.

Windage is adjusted by pushing the rear sight drum.  This is a friction fit in the front sight base and can be a real pain to adjust.  You might be able to get it to move with a hammer and punch, but it is preferable to use a sight pusher.  It is also not uncommon to hear about cheap sight pushing breaking on AK or SKS sights.

I use the Magna-Matic sight tool, it is the best one that I know of.  While not obvious, the top of the tool is cut to go over the front sight post for adjusting elevation.  The O design instead of a C shaped design helps prevent it from slipping off the sight or breaking while it is in use.

How much windage  adjustment you get per turn of sight pusher will depend on what thread pitch the sight pusher uses.  Rule of thumb is that it will be approximately 1 MOA per 1/10 a turn of the sight pusher.

It is very common for AK sights to be canted, and for them to require excessive windage adjustments to zero, such as this Arsenal AK pictured above.

Some AKs use the “RPK” rear sight.  This has a windage adjustment built into it.  The knob on the right side of the rear sight is spring loaded and can be pulled away from the sight and rotated to adjust windage.  I have no clue how much adjustment per click, but they are very easy to use.

There is also a rare rear sight for suppressed AKs that has a cam for switching between different ammunition.

AK have simple and effective sights, but sometimes they can be a real pain in the ass to get zeroed.

DI Optical’s EG1 Review: Thinking Outside the Box with a Box

Aimpoint is the only serious dot sight that anyone recommends anymore, right? Right. With the death of EOTECH’s reputation, we are left with option A for a serious duty ready red dot sight. Well, that would be the case had not D I Optical stepped into the American market. Can DIO fill the gap and bring in a quality product that gives consumers a second option to consider aside from Aimpoint?

New to the Market, Not New to the Game

If you aren’t familiar with DIO, the RV1 is the Americanized version of their service rifle red dot sight, and DIO has been making red dots of all sizes for years. See NSN# 1005-01-626-1714 for their Heavy Machine Gun Sight which is in service here stateside.

My first hands on impression with DIO was with their RV1 red dot, which I reviewed at my own blog a few weeks ago. Reaching out to DIO to show them that I beat their little red dot up and it survived, they propositioned me to beat on their EG1 red dot like I did to the RV1. I agreed.

So I took it out to the ranch, sighted in off the co-witnessed iron sights, and got to work. I threw it down multiple times, and attempted to drown it several times, and did my best to make it break. No dice. No Drama. The dot stayed on and nothing construction wise was amiss. The only problem I encountered was a loosening of the mount screws… and this was a self-made problem. I should have loc-tited it down before I even mounted it. I know better. Once I noticed that it was loosening, I ran into my shop, torqued the screws back into place, and my zero came back, and I kept on shooting. (PS: My Geiselle Mk4’s screws also started to loosen, so keep that in mind. Yes, I beat my gun that bad testing the EG1).

So with the beating, the drowning, and the overall slapping around, the EG1 performed like a red dot should… bright and always on. One of the key features of the optic is the unique form factor. As you can see, it is a square body with a square-ish 28mm lens. This unique configuration is made possible due to the prism assembly which allows the emitter to be smack dab in the base of the optic. As the emitter shines upward from the base, it is redirected by the prism to the shooter and it allows the DIO to maximize lens real estate without the emitter assembly getting in the way. Thinking outside the box with a box. It’s just crazy enough to work. I like it.

It features a battery life of 5000 hours at a medium setting… lets see, 15 total brightness settings divided by two… well let’s call that setting 8, we will round-up. The side of the optic has the windage and elevation adjustments and comes with a handy tool to adjust them, though a dime would work just the same.

It’s also mil-std 810G environment tested so we have some certification that we are getting a optic which passes some testing standards unlike many of the Chinese products on the market today. The mount itself is held in place by two hex screws, and they are big and beefy. The optic is compatible with ARMS #17 style mounts, so you have plenty of options for trading out the finger knob.

The sun shades are removable, so you can enhance the view even more. I noted that the optic is not sensitive to placement. There isn’t a “tube effect” like the Comp M4 or the mini RDS when they are mounted too close to the eye. The EG1 is just a wide open eye box. I ran it close to the rear BUIS to reduce over-the-shoulder sun glare if the heat was at my 6.

SO OVERALL

Impressions are good. This optic retails for just north of $400 bones and that is precisely in Aimpoint Pro territory. For a relative newcomer to the US market, the EG1 represents a very different approach to the RDS and its use of a prismatic assembly to widen the field of view is a novel concept. With my two DIO red dots in hand, I must say that I have started to recommend them on the forums I haunt. I hope to see more of DIO’s products in the future, and hopefully they can continue to innovate in the red dot market and add some much needed competition.

Nightforce has a new website.

http://nightforceoptics.com/

NightForce optics has a new web site.  NightForce scopes have been popular in both the tactical and benchrest competition crowd due to their durability and accurate tracking.  I own a NXS 2.5-10×24 and love it.

Now there are tutorial videos on how to set the NF zerostops.  This is an excellent addition because the previous printed instructions of how to set the zero stop on the compact models was not clear.