98Z5V Posted October 23, 2011 Report Share Posted October 23, 2011 First, I must say that this mount looks like it's a special from Bobro Engineering, for SWFA (http://swfa.com/SWFA-Precision-Optic-30mm-Mount-P48134.aspx). The offset of this mount is between the Bobro Precision Optic Mount (http://www.bobroengineering.com/view/product/7/) and the Bobro Precision Optic Mount - Extended (http://www.bobroengineering.com/view/product/8/).On my 20" 5.56 precision rifle, I was using a set of Burris X-treme high rings on a Bushnell 3-9x40 scope. I liked the rings, but I was looking for a one-piece mount with a QD capability. I found this mount for a screaming deal here in the For Sale section, so I grabbed it up. Once it arrived, I was ready to mount it up, and realized that I forgot that my scope was a 1" tube - and I bought a 30mm mount. I ordered a set of Trijicon 30mm-1" adapter spacers from DSG Arms, and mounted everything up once they arrived. Now, the most important thing I'd like to mention about this mount is the ingenuity of the clamp - Andrew Bobro is a wizard for coming up with this. His locking/securing mechanism is simply pure genius. The camming lever moves the locking bar in, towards the rail, but the device is spring-loaded to the locking bar. It will lock with the same tension onto just about every single rail out there, won't/can't come loose, and it'll most definitely accomodate a rail that is machined slightly out of spec. His name for it is the "BLAC Mount," and here's the run-down on his design specifications for it:Design Features*The Precision Optic Mount features patent pending BLAC™ lever system which was designed around the following parameters:*Must be compatible with any 1913 Specification Rail, to include systems that are out of specification (within reason) and this includes Weaver rails.*Must be completely tool and user adjustable free. It needs to be 100% self contained and mate securely to any rail without the user having to tailor the pressure/engagement position.*Must lock with enough pressure to positively attach any device or optical instrument to a rail without movement, static or dynamic forces not withstanding.*The rail must not experience any deformation due to user error. This must include synthetic (plastic/polymer/composite) rail systems.*Auto Index capability. The device must also index parallel to the bore. The unit must always repeat the forward shift (recoil forces direction of influence) not only to maximize zero repeatability, but to take this step of installation out of the users initial mounting sequence. Index must be redundant.*Unit must not shoot loose due to improper mounting or a mechanical bottoming out.*The system must incorprate a safety that prevents the lever from being accidentally opened. The safety must be able to be manipulated in conjunction with the lever rotation, so that only one hand is required to open it.*The unit will utilize constant force to ensure required pressure in all conditions. *The force must be substantial to prevent any shift forward/aft left/right.*The pressure must be applied in a linear direction centered in the main body to prevent cocking of the mount.*It must be easy to manipulate by gloved or fatigued hands.*It must be extremely robust, and withstand shock and impact to the system housing.*There were others, but by listing them we would compromise our trade secrets.Now, to the pics. First shows the primary index bar onto the Pic rail sections, but you'll also see a large roll pin in there - that's the second index point, which further "enhances" the stability of the mount on the rail - with one, you can probably repeat your zero once you remove and reinstall the mount. With two, it's more probable that it's going to remount exactly the same, without shift of zero. Also, in this pic, the lever is fully open, and you can see the locking bar "wide open."In this pic, I'm starting to close the locking lever - you can see the locking bar moving inward, camming in, but you can also see two heavy duty spring coils in there...Now, once you're getting close to the "locked" position, you can see how this device cams in, compresses those two springs, and exerts the force on the locking bar - completely secured to your rail.All the hardware on this mount is pure quality - there are no cheap fasteners anywhere on there. You don't mount the rings together with allen bolts, either. The upper part of the rings have studs in them, and you secure the ring halves together with allen "nuts," through the bottom rings. The ring bottoms are actually bolted to the base, and that is in turn bolted to the mounting device. Completely modular, brilliant from a manufacturing standpoint, and solid.Here are some other pics of it all mounted up:Good clearance between my scope, and the MagPul Gen 2 rear MBUS - there is a pretty good airgap there, even though it's hard to see in the pic. I doubt a Gen 1 MBUS would clear, even though this mount is the exact height-over-bore as the Burris Xtreme high rings:I'll shoot it tomorrow (Sunday) to either re-zero, or check my zero - the scope is mounted in the exact same eye-relief position as before, so the shift should be very minimal. <thumbsup> Quote Link to comment Share on other sites More sharing options...
imschur Posted October 23, 2011 Report Share Posted October 23, 2011 Very nice man. I believe you can also purchase this with a Trijicon logo <thumbsup> Quote Link to comment Share on other sites More sharing options...
blue109 Posted October 23, 2011 Report Share Posted October 23, 2011 you have some cool toys! Quote Link to comment Share on other sites More sharing options...
98Z5V Posted October 24, 2011 Author Report Share Posted October 24, 2011 you have some cool toys!Thanks, man. ;D I'm very pleased to report that, somehow, I didn't need to adjust a single thing. I did make some careful measurements of the scope position before I removed it and locked it into the new mount, here. It's in the exact same position as before. It was still dead-on at 100, and performed exactly the same out to 550. No problem. One thing I did get to do, that I never wanted to do previously, was just take it off and shoot the back up sights. They've got a 200-yard zero on them, and shooting them was actually fun again... <thumbsup> <laughs> Quote Link to comment Share on other sites More sharing options...
98Z5V Posted December 28, 2011 Author Report Share Posted December 28, 2011 One thing I did get to do, that I never wanted to do previously, was just take it off and shoot the back up sights. They've got a 200-yard zero on them, and shooting them was actually fun again... <thumbsup> <laughs>This, right here, actually led down the (short) road to another build - iron sights on a 20" rifle build, but a little different - basically, a National Match 20" rifle, but wood furniture. It turned out SWEET! <thumbsup>http://308ar.com/forum/black-rifles/re-swfabobro-scope-mount-review/ Quote Link to comment Share on other sites More sharing options...
unforgiven Posted December 28, 2011 Report Share Posted December 28, 2011 Brother 98 outstanding explanation,the parameters of design were perfect.Clean and functional <thumbsup> I also use Gen 2 MBUS rears on both 5.56 & .308.Shoot on bro. Quote Link to comment Share on other sites More sharing options...
blue109 Posted December 29, 2011 Report Share Posted December 29, 2011 i really like this mount. played with friends Larue and ARMS mounts and this one is way nicer. Quote Link to comment Share on other sites More sharing options...
imschur Posted December 29, 2011 Report Share Posted December 29, 2011 Ive got the Bobro mount inbound as I type. I will compare it to my Larues Quote Link to comment Share on other sites More sharing options...
imschur Posted January 5, 2012 Report Share Posted January 5, 2012 I now have a Bobro Bipod and Bobro Scope Mount and I really feel Andrew Bobro has developed the most brilliant QD locking system to date. I will post detailed pictures soon. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 5, 2012 Author Report Share Posted January 5, 2012 I really feel Andrew Bobro has developed the most brilliant QD locking system to date. I concur. I've never seen a locking system like this, but I love it. It's pure genius. <thumbsup> Quote Link to comment Share on other sites More sharing options...
imschur Posted February 18, 2012 Report Share Posted February 18, 2012 I uploaded several pictures of a 1" slightly extended Bobro Precision Optic Mount here. Click on them to view them full sized Quote Link to comment Share on other sites More sharing options...
BLKSHEEP Posted March 11, 2012 Report Share Posted March 11, 2012 Ive got the Bobro mount inbound as I type. I will compare it to my Larues Any review/comparison for us <munch>? Quote Link to comment Share on other sites More sharing options...
Zebra644 Posted March 23, 2014 Report Share Posted March 23, 2014 Yes please I am thinking Bobro or Larue Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted June 2, 2014 Report Share Posted June 2, 2014 I agree I'm on the fence about a mount Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 2, 2014 Author Report Share Posted June 2, 2014 Don't be on the fence about this one - if you can find a Bobro, you will not be disappointed. Not in the least. Quote Link to comment Share on other sites More sharing options...
StainTrain Posted June 2, 2014 Report Share Posted June 2, 2014 (edited) Don't be on the fence about this one - if you can find a Bobro, you will not be disappointed. Not in the least. No kidding. There are superior to ADM and LaRue. Not that those are bad, but Bobro and GDI are in a different category. You won't regret buying good mounts. Scopes come and go, but good mounts hang around forever. Edited June 2, 2014 by StainTrain Quote Link to comment Share on other sites More sharing options...
StainTrain Posted June 2, 2014 Report Share Posted June 2, 2014 (edited) I agree I'm on the fence about a mount Based on your other thread, I would say GDI is overkill (and over budget) for what you described your use to be. So as 98Z5V stated you will not be disappointed with the performance to cost ratio going with Bobro. Additionally they mount/clamp top to bottom not side to side like LaRue and ADM, which IMO opinion is superior. Edited June 2, 2014 by StainTrain Quote Link to comment Share on other sites More sharing options...
planeflyer21 Posted June 2, 2014 Report Share Posted June 2, 2014 Don't be on the fence about this one - if you can find a Bobro, you will not be disappointed. Not in the least. Are they scarce? I stumbled into a "too cheap to pass-up" deal on GG&G QD extended mount. Very good mount, especially at $140. Quote Link to comment Share on other sites More sharing options...
blue109 Posted June 2, 2014 Report Share Posted June 2, 2014 (edited) I like GGG stuff alot....but id spend the $60 extra for a bobro every time. if you don't have the extra $60, don't eat lunch for the next 2 Weeks and buy it then. (that's how I make most of my upgrades, sometimes extending to skipped breakfasts as well :P ) Edited June 2, 2014 by blue109 Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted June 2, 2014 Report Share Posted June 2, 2014 Additionally they mount/clamp top to bottom not side to side like LaRue and ADM, which IMO opinion is superior.Some LaRue mounts have top to bottom scope mounting.Bobro mounts place the optic too high IMO. Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted June 2, 2014 Report Share Posted June 2, 2014 Some LaRue mounts have top to bottom scope mounting. Bobro mounts place the optic too high IMO. You like low profile scopes. If you had a PRS (or similar) the high mount might might be a lot more comfortable. Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted June 3, 2014 Report Share Posted June 3, 2014 Gtg? http://www.bobroengineering.com/view/product/7/ Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 3, 2014 Author Report Share Posted June 3, 2014 Yep - just make sure it puts your scope far enough forward, before purchase. Quote Link to comment Share on other sites More sharing options...
Cali_Ed Posted June 3, 2014 Report Share Posted June 3, 2014 I know there's a slight forward model. But I'm new to powered scopes. What do you suggest brother Quote Link to comment Share on other sites More sharing options...
98Z5V Posted June 3, 2014 Author Report Share Posted June 3, 2014 (edited) Take a look at the pics of the mount on mine - that's a Bushnell 3-9x40 on the AR-15 setup. That's about perfect, for me. The base on the one you posted is the exact same base as the one on mine. If you can get that mount far enough forward on your upper receiver, and get your scope in it - with enough forward distance to give you proper eye relief, then you're good to go. <thumbsup> From looking at both closely, you can make that one work. There's enough space on the receiver that you can go forward with the mount (on the receiver) if necessary. That one you linked is good to go. Edited June 3, 2014 by 98Z5V Quote Link to comment Share on other sites More sharing options...
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