What are people using to mount 5-25 PM2s on ARs?
Grateful for a pointer towards an inclined 34mm cantilever mount with sufficient ring height for the 5-25's deep saddle.
Thanks!
Brownie,
I hear where you're coming from my man. Here is how I would break it down....
1) I'd like to know how much eye relief you require based on the stock you have on the rifle and where that positions you relative to eye relief.
Reason: Cantilever mounts are available in 34mm ring sizes that will fit the S&B PMII but differ in the fact that some offer 1" extensions, others 2" or 3 inches of extended offset to accommodate eye relief.
Example: I can only offer you the following based on my experience in the context of how I prefer to set my rifle up.
I have a Bushy Elite 4.5-30 w/Tremor in a Spuhr mount (SP-4616: 34mm, 1.46" CL, 20.6 MOA, 1" forward offset). The optic gives me a consistent 3.7" of eye relief throughout the entire magnification range. The S&B PMII gives you 3.1" of eye relief - which also doesn't change throughout the variable magnification range. I have it on an AR10 wearing a UBR stock that I prefer to run collapsed to minimize the overall length of the weapon. When the UBR is fully collapsed my eye is placed apprx 2" from the rear of the upper receiver, leaving me with 1.7" of additional eye relief to account for in the mount. The Spuhr puts the scope (both the mount placed as far forward as possible and the optic mounted as far forward in the Spuhr as possible) 5/8ths of an inch from the rear of the receiver, giving me a total distance of 2.6125" from cheek weld to optic. Clearly not enough to accommodate for the 3.7" of eye relief resulting in my having to extend the stock 2 positions to accommodate for the excess needed.
I kept with the Spuhr for various reasons as I use their ACI interfaces on several other mounts, use the built in level, genuinely believe they're one of the best made optic mounts around, and don't want to take a hit selling it for a JP extended mount (plus I've already Cerakoted that shit) ?.
If I were you I'd look into a cantilever design that gives you a CL of 1.4-1.5" and a 2" of offset over 1". I didn't see where you mentioned a QD requirement, but I'll include QD and non-QD - using the above req's would leave you with Bobro, JP, Nightforce and Larue as options I personally know will work. ADM will have a CL of 1.55" and their levers BLOW. Out of those JP is the only one that doesn't offer built in cant (which is technically a decline not an incline).
I love GDIs QD mechanism and think they're worth what they charge (my T-1 is on a GDI), but they have the same problem a lot of other manufacturers do. I have to poke around to find out what centerline is and what length of offset is, weight, blah blah before even considering it. WTF, you want nearly $600 but don't have the f'ing time to put basic info on your product on the website? I'd still buy one though. ?
Hey, at least you have shit narrowed down to three options. Better shape than you were a little bit ago...