I've just completed my Mk18 Mod 1 build and for the first time I can't decide on what optic I want to mount on this rifle, I've been thinking about it since the beginning of this build and I haven't made any progress. I've currently own several Aimpoints (M2s & M4s), one EoTech, and a Trijicon 1-4x all mounted on other battle rifles. For the Mk18 I believe the correct optics are the Eotech 553, or Elcan Specter DR Tan, however, I'm also fairly certain there are a bunch with Aimpoint M2/3s mounted.
I'm really leaning hard towards the Specter FDE, because I like that it's both 1x and 4x, can mount a RMR, has great battery life and will run without batteries. However, these same features are drawing me towards the Trijicon TA31ECOS. Then reality sinks in and I realize the rifle has a 10.5" barrel and therefore is limited to only a couple hundred yards and both optic's BDCs will be incorrect. At this point I start thinking about the correct 553 or the new EXPS Tan Eotech, but they don't have a great track record and aren't as light as the T1. I like the T1 except for I have at least 6 other aimpoints one of which is on a Mk18 Mod 0 build and I want something different. I've now come full circle back to the Specter or TA31ECOS.
Which would you put on a Mk18 Mod1, if it's not on my list please let me know what it is. The price needs to be <$2000.00 and I would prefer a military optic not something designed for 3 gun like the Swarovski Z6i.