MKM has one that mounts to pic rail. I haven't used this, but have several of his other products and they work well.
![]()
Billet XLP Rail Mounted Level
The MKM Billet XLP Rail Mounted Level is a robust, yet slim and lightweight solution for maintaining accuracy at extended ranges.www.mkmachining.com
I have 2 of these and are pretty nice(though a little pricey).Also a plus is that they fold out of the way when not in use.
![]()
TANGO RM 2.0™ ACCU/LEVEL™ Articulating, Fine-adjustable
RAIL MOUNTED ACCURACY - 2.0 The new, revised TANGO RM™ 2.0 ACCU/LEVEL™, is Flatline Ops' only picatinny rail mounted scope level, fitting all Mil Spec** rails. The new 2.0 is now 7075-T6 aerospace grade aluminum, for a stronger, longer lasting device for your rifle system. The 2.0 body has been...flatlineops.com
When I bought mine a couple years ago I think they were around $120,doubt I'd pay $160 for one now either.Thanks for the link. This looks like a decent one for the money. The Flatline Ops that Diverjefff recommended looks nice but I'm not spending $160 for a bubble level.
True. Once any of the levels are leveled the performance is about the same. $200 for the fancy adjustable or $20 and a shim for the cheapy. They both indicate level. We all have different wallets and different choices.Years ago, I got into a "debate" over bubble levels with the owner of Sniper's Hide. He claimed the USO bubble level was a poor device and wasn't actually level when mounted to the picatinny rail. The fact is, ANY picatinny bubble level you might try may have to be shimmed to have the bubble centered (i.e. level) when the rail is leveled.
I wrote the previous post largely because I have seen images here at AS of multiple flip-out style bubble levels where the bubbles weren't necessarily all perfectly centered in the little observation window when they were lined up side-by-side. I have also seen comments suggesting the manner in which the bubbles move inside the glass tube may be different; i.e. some bubble levels appeared to be less sensitive and required more cant in order to cause the bubble move. I have never observed anything like that with the USO flip-out anti-cant device, and the Monstrum levels also seemed to work pretty well when manipulated in the hand. However, I haven't actually mounted and used them yet. Nonetheless, I think they're going to work every bit as well as the more expensive USO bubble levels.True. Once any of the levels are leveled the performance is about the same. $200 for the fancy adjustable or $20 and a shim for the cheapy. They both indicate level. We all have different wallets and different choices.