Looking for a high quality, affordable, and relatively quick and easy to install Mosin scope mount that does NOT require any permanent modifications to your rifle? The Brass Stacker Scout Scope Mount for Mosin Nagant Rifles just might be for you.
For a high level overview of various options to put a scope on your Mosin, check out our Best Mosin Nagant Scope Mounts article.
Brass Stacker sent three parts for use in our Mosin Modernization Project Hunting Rifle:
- M9130 M9159 Go Low™ Scout Scope Mount model MN9130GLM-M
- Brass Stacker MNCKSPRB Cocking Knob Safety Pull Ring for Mosin Nagant Rifles
- NCStar SSB27522G 2.75 x 22mm Long Eye Relief Scout Scope
Why you might want a “Scout Scope”
If you want to put a magnified optic on a Mosin Nagant rifle, then you have 2 basic choices:
- Install a scope base over the receiver to hold a typical scope. Generally, the base blocks the motion of the bolt handle requiring a down-turned bolt handle for rifle operation and blocks access to load the rifle via stripper clips.
- Install a scope base forward of the receiver opening where the scope will not block the bolt handle and allows loading the rifle via stripper clips.
According to Brass Stacker, a “Scout Scope” or “…LER (Long Eye Relief) optic, or Scout Scope, mounted forward the receiver provides a substantial uninterrupted overall field of view. This unconfined environment results in greater situational awareness allowing for fast target acquisition and shots taken with both eyes open. This configuration has additional advantages for bolt action MilSurp (military surplus) rifle platforms as it does not interfere with spent casing ejection, straight bolt handles or stripper clip use.”
Having used this Scout Scope setup on the Modern Mosin Hunting Rifle I can attest to the truth of Brass Stacker’s description. I used this rifle for deer hunting in locations where the maximum shooting lane is 100 yards or less and found it to be very comfortable for quick target acquisition at those ranges. When using the Scout Scope in a location with longer shooting lanes of up to 300 yards I found myself longing for higher magnification and a reticle with bullet drop dots or hashes.
Won’t installing a scope ruin the collector value of my Mosin?
Not with the Go Low™ Scout Scope Mount because installation requires no permanent modification to the rifle. You do have to remove the rear sight base, but it can be replaced later, if you choose to restore the rifle to original configuration.
Install Mosin scope mount
We opted to rely on the pros to install the scope mount. Unlike some Mosin Nagant Scope Mounts that use the rear sight base as part of the installation, the Brass Stacker M9130 M9159 Go Low™Scout Scope Mount requires removal of the rear sight base. If the Mosin rear sight base pins are secured by interference fit pins, then one might be able to simply drive or push the pins out. However, if the pins are also secured with silver solder, then heat will likely be needed to melt the solder so the pins can be driven or pushed
out. While I hear that this job is well within the capabilities of most DIY gun folks, limited time meant it would be best to “hire out” this job. The steps appear pretty simple:
- Remove the 2 pins holding the sight base on,
- slide off the sight base,
- slide on the Brass Stacker Scout scope mount,
- install the 2 screws in place of the pins
A couple of things to note about the Brass StackerM9130 M9159 Go Low™Scout Scope Mount:
- The picatinny rail atop the Go Low™Scout Scope Mount is secured by 2 hex screws which allow alignment of the rail to the horizontal centerline of the barrel.
- The Go Low™Scout Scope Mount base slides onto the rear scope dovetail atop the barrel. If the barrel is not timed properly, then the scope base will be canted by the same amount that the barrel is mistimed. This is the case with our barrel, although we have yet to notice any ill effects while shooting.
- The Go Low™Scout Scope Mount is held to the dovetail by 2 screws in place of the interference fit pins that held the rear sight base. We like easy to remove screws vs pins as they are easy for the DIY upgrader to install and can be removed easily.
That is the critical question, isn’t it? A scope mount that won’t hold zero is worse than having no scope mount at all.
In our experience over 6 months of shooting on numerous trips to the range, to the deer stand, to the ground blind, etc. The Go Low™Scout Scope Mount has remained true. The rumors that I am not to careful with my rifles are true, by the way. The scope and mount have been banged around a bit but have shown no ill effects.
Did you really use an NC Star scope?
Yeah… I know. NC Star has a reputation for making… well… crap. Why would I put it on a project gun that has has so much time and effort invested in it… that I take hunting to put food on the table?
To be completely honest (as usual), I wasn’t going to. However, the guys at Brass Stacker offered to send the NCStar SSB27522G 2.75 x 22mm Long Eye Relief Scout Scope for use in this project and they were insistent that I would not be disappointed. They said that this is the ONLY NC Star product that they sell or recommend, as they have tried a LOT of different optics and found nothing else in the NC Star line that can reliably be expected to withstand the forces of the big 7.62x54r round in the Mosin Nagant.
As with the Scout Scope mount, the NCStar SSB27522G 2.75 x 22mm Long Eye Relief Scout Scope has performed well and held up to all the abuse it has face. At only 2.75 magnification it can still be used with both eyes open, similar to an unmagnified red dot scope, while still giving a slightly larger picture of your target. As surprising as it sounds, I agree with the Brass Stacker guys and also recommend the NCStar SSB27522G Scout Scope.
Other Brass Stacker options:
- MN9130SSM Scout Scope Mount for Mosin Nagant Rifles (mounts on top of the existing rear sight, with no removal of the site base)
- Brass Stacker MN384453SSM Scout Scope Mount for Mosin Nagant M38, M44 and T53 Rifles
- Universal Fit Brass StackerTM “Anchor Point” Series Scout Scope Mount for RUSSIAN Mosin Nagant M39, M9130, M38, M44, M53 Rifles
This was the first Scout Scope configuration that I have used and I was a bit skeptical. However, the M9130 M9159 Go Low™ Scout Scope Mount mosin scope base has worked flawlessly in conjunction with the NCStar SSB27522G 2.75 x 22mm Long Eye Relief Scout Scope. I really like that modifying the rifle’s bolt was not necessary (although we did install a bent bolt anyway).
I should also mention that the Brass Stacker MNCKSPRB Cocking Knob Safety Pull Ring is one of the more simple and useful modifications I have run across. It reminds me a lot of the safety pull ring on the Swiss K31 rifles that I have become addicted to.
Who is Brass Stacker?
Founded in 2008, Brass Stacker started off making Triggers for the US Army’s M203 Grenade Launcher. They expanded to a line of semi-auto pistol parts (mags, springs, guide rods), and then into scope mounts for milsurp rifles. Brass Stacker continues to expand their product lines today with leather slings and other parts and accessories. Located in Western North Carolina, the Brass Stacker crew can often be found “product testing”… or just shooting for fun.