Monstrum2X Flip-to-Side Forward Magnifier | Compatible with LPVO, Prism Scopes, Fixed, and Variable Magnification SFP and FFP Optics

I have this magnifier mounted in front of a primary arms slx 1x micro prism, mounted right up at the forward end of the upper receiver. Tight fit with a magpul mbus sight, 1x micro prism, and this magnifer; but it works and there is some space between micro prism and magnifier.It works as intended and I didn't have to use the spacers to change the mounting height as the primary arms micro prism is also at 1.5" height.I see a review complaining about eye relief and another about field of view. The one complaining about eye relief used this magnifier incorrectly, it goes in front of your optic not behind like a traditional magnifer. I have no issues with eye relief, its the same with or without the magnifier, no change in eye / head position.As for field of view, there is a reduction. It's similar to zooming in with a scope where there is a reduction in field of view.I tried a monstrum ghost ultracompakt 3X micro magnifier, but it didn't work out for me. Could not get proper eye relief or sight picture with any amount of adjusting the diopter. Might work out better behind a red dot or holographic sight.It did work when I mounted it in front of the optic, but I had to mount it to the rail which is not ideal. Returned and bought this 2x forward mount magnifier.For those looking at this 2x forward magnifier hoping that it will magnify the reticle (dot, crosshair, etc..), it will not. It can only magnify what it see's and since it mounts in front of the optic, it doesn't see the optic and can't magnify it.

I have a Swampfox Blade prism optic with 1x (so no) magnification and I've been wanting a way to add magnification for the rare longer distance shot I might take with the rifle that optic is mounted so I was intrigued when I stumbled on this forward magnifier. This magnifier seems to be made of quality materials and has a nice finish, the mount fits solidly and the screws for mounting felt strong (I didn't feel like they were at the point of stripping and didn't fear really tightening them down). It did take a bit to zero it in, there was a big difference between my optic zero and the zero with the magnifier in use but once zeroed it held nicely and worked great. I love the swing mount, no button to push when swinging out or back in, just swing it. It holds firmly yet doesn't take a lot of force to swing it and feels really solid with no wiggle or play in the hinge/pivot. When I bought my prism optic, I didn't want one with a fixed 3x or 5x magnification, for normal use I prefer no magnification but it is really nice to be able to add the 2x now and then.I'm really happy with this magnifier and I do recommend it. I'm probably going to buy another one for use with the LPVO I have on another rifle so I can bump it's 1-6x out to a 1-12x when needed.

This is a great concept decently executed.Since this doesn't go directly in front of you eye,I can't really call it eye relief.It has impressively long sight or scope relief.I've placed it anywhere from directly in front of to 8" from a scope.It doesn't always line up very well with other brands.It does fortunately works great with most Monstrum optics.It doesn't work as well with larger objective lenses, i.e. 40mm+This has a decent mount, that is secure and reversible.The weight is reasonable at 1/2lb.The biggest improvements I'd like to see are:Most importantly a 3x (and maybe 4x) option,Completely toolless mounting and adjustment,And more refined shims for better compatibility.Overall, this is well worth the price for a unicorn of an optic accessory.

Excellent quality for the price, optics are very good. A little bigger than expected but still fairly compact. Having unlimited eye relief is wonderful but the field of view is a little bit limited. The mount is robust, steady, and securely snaps into both positions without movement. Has oddball spacing on the mounting hardware which eliminates the possibility of using a FTC mount. Has to be zeroed rather than just centered which allows a second long range zero.

awesome little magnifier, super clear, good ER, can't find any cons really

Works great in front of my SwampFox Mini Prism sight.

This is a novel concept if you are worried about eye relief or do not have the real estate behind your optic to support a magnifier. But the execution still needs some refinementLet's start with the pros. The glass is clear, the flip to side mechanism is robust, and the mount comes with two shims to help center the magnifier vertically on your optic. And because it is located forward of your optic, there is no concern regarding eye relief.That's about where the pros end...The design of the magnifier makes it so if it is not almost touching the optic, you will lose TONS of field of view. The quintessential "paper towel tube" view. Even if it is almost rubbing your optic, you still lose a large amount of field of view. This is not the case with a traditional magnifier. There is no way to adjust the fore-aft position, so if you are running you will have to move the magnifier almost a full 1913 slot forward, which makes the issue all the worse.Additionally, this beast is HEAVY. Easily as heavy as other traditional magnifiers.In short, if you have to run a magnifier but cannot compensate for limited eye relief and are willing to sacrifice field of view and weight, sure - get one.For everyone else, either get a traditional long eye relief flip-to-side magnifier or an LPVO (and/or fixed reflex)

So the cons-Didn’t come with the two spacers to raise the height. Came with the wrong Allen key.Pros- fit and co-witnessed, no adjustment needed. The folding part is crisp and really locks in place( I expected it to be flimsy at best). Sight picture is amazing and clear.