DD MK18 Setup for SD Sight Options

General Firearms NFA
1

I have a DD MK18 that I am using an old Eotech on. The Eotech is beginning to get flakey. I have about decided to go with an Aimpoint T-1 with the 2 MOA dot. I have yet to decide on the mount. I am most interested in the DD tall or the Larue tall mount. This gun currently doesn’t have iron sights and am interested in the Troy Dioptic Triitum rear sight and the HK style Tritium front sight. I want these sights set up for lower 1/3 co-witness.

I am setting this gun up as a pure close combat self defense weapon. I plan to add a Magpul AFG and some type of lightweight weapon light. The rifle currently has a Raptor CH and that’s it.

Any advise here would be appreciated.

2

The DD mount is great, unless you want QD. In that case, I go with Bobro 1/3 mounts.

There is no point in having tritium rear sights.

3

Normally I would agree but with my vision issues, having the 3 dots to line up will allow me to sight the rifle without corrective glasses. I made this change on my pistols about a year ago and the impact was huge.

4

Unlike pistols, you won’t see the tritium on an AR rear sight.

5

Ok. Is there any downside to the QR mounts other than weight?

6

They are more prone to snag on gear, etc. However, this has never happened to me.

7

DD sights are fine, paint the front sight base white for close range shooting. No need to overthink it. At lost range you barely need sites.

The only sights I’ve seen better are the Sig 552 OEM sights.

8

The BOBRO mount is probably the best Aimpoint mount on the market and worth every penny.

9

It’s the best mount for anything that it fits where qd is desired.

10

They’re right about not needing tritium in the rear. I would stick to basic rear aperture over the dioptic. Used properly its easier and faster to line up your front post and gives you less to think about.

What makes the Bobro mount better from a function standpoint?

11

I use the T1 with Larue tall mount and never had any issues on my MK18 setup. Also, I use the DD fixed sights which work perfectly for the lower 1/3.

12

I own both the larue 1/3 and the ADM with 1/3 spacer. I actually prefer the ADM mount. Both seem gtg but with mark larues recent behavior I will not give them anymore of my money. I think ADM will be my got to for mounts.

13

I’m sorry…sorry…“recent”? Can I borrow some money…for just a bit? LOL!

Okay, on to the technical part of Bobro superiority. When Trijicon tested it, they used some pretty sophisticated stuff. Way more precise than slapping it on a weapon and shooting groups. Some laser setup as I understand. The Bobro and others were tested. Bobro showed no measurable shift. It beat out others and became an OEM mount for trijicon.

-The clamping area is larger than LaRue, by FAR. Lots of surface area.
-The tension is pre-set perfectly. No guesswork, “preferences”, or anything. It works as-is. No screwing with it.
-It’s produced by someone with no douche-bag tendencies.

14

I ordered the t-1 and Bobro from G&R. They came in today. Grant took good care of me. They mounted up well and I had them co-witnessed (bore sighted) in short order. I look forward to get the gun out and shooting it.

15

The AMD mounts are also pretty good and they cost less than those mentioned.

16

I’d set the upper up with a micro, fixed front sight and rear of your choice. Tritium on irons (on a carbine) is useless IMO. I’ve used ADM and LaRue mounts, both function as advertised and are nice if you’re going to hop the optic around to a couple uppers.

My go to, an 11.5" upper but you get the idea:

17

I have a DD Mk18 set up as home defense/spare work rifle. I run an aimpoint pro in a Larue LT-150 (I prefer the bigger tube of the Pro vs the T1). I have fixed DD iron sights. I prefer a fixed rear for close quarters because inevitably the aimpoint knob will get bumped on gear and become invisible (I’ve had this happen several times in training and during operations.) It’s easier for me to drop my head and use the fixed rear. Not worried about tritium irons because I run a weapon light.

18

For home defense on a rifle I would think fixed Daniel Defense Irons with a good weapons light or an Aimpoint turned on all the time would be optimal (I’m a little biased since this is how mine’e set up). The Aimpoint is option 1, the irons are option 2. I wouldn’t bother with Tritium.

19

Wrong.

I have a set of Troy BUIS with Tritium and also wear corrective lenses. In the dark, the Tritium front and rear work great to aid in aligning my sights. The front BUIS is a smallish green blob while the rear BUIS are 2 larger green blobs.

I’d recommend using a Light whenever possible for target IDing. But that doesn’t mean that a set of Tritium BUIS (Front and Rear) wouldn’t be useful.

20

I have mine set up what an Aimpoint T1 and Troy BUIS. The only other thing mine has at the moment is a stream light TLR-1 situated on the right side of the barrel so I can actuate the light as need be with my support hand. Only thing left is the suppressor which should be out of jail here in a few months. Currently running the Larue mount with the lower 1/3 cowitness. So far everything has shaken down well with no issues. Mine is at the bedside currently beside the Glock.