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Gletcher M1891 Sawn Off Mosin Nagant Rifle CO2 BB Gun Field Test Review

I decided to do my Field test of the Gletcher M1891 Sawn Off Mosin Nagant Rifle a little different than my standard filed tests. I pretty much already did a similar Field Test for the M1891 during Table Top Review and if I used the same methods for testing I would most definitely have gotten the same results. Which by the way where a 1.75 inch group from a full 17 round magazine shooting from 30 feet back, and an average of 430 feet per second.

As you know, I have been utilizing clay pigeons in many of my shooting videos so I thought, why not have some more fun and set up a bunch of miscellaneous targets at a variety of distances ranging from 30 feet, right up to 80 feet, and see what I can hit shooting the Gletcher M1891 shooting a couple mags of 4.5mm steel BB's.

As it turned out I think I did much better than when I tried to shoot my Steel Force at targets set up long range. Anyways, watch the video, I tried to make it fun and interesting and even setup 4 cameras this time to catch all the action!

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Gletcher M1891 Sawn Off Mosin Nagant Rifle CO2 BB Gun Table Top Review

Type: BB Rifle.
Manufacturer: Gletcher.
Model: Gletcher M1891 (Replica of Sawn Off Mosin Nagant "Obrez").
Materials: Metal & plastic.
Weight: 5.7 pounds (2.6kg).
Barrel: 5.5 inches, smooth bore (inner barrel).
Propulsion: CO2.
Action: Bolt - single shot - single action.
Ammunition Type: 4.5mm Steel BB's.
Ammunition Capacity: 16 rounds. (I was able to fit 17 rounds in the magazine)
FPS: 394fps (120m/s).

Trigger Pull: The trigger pull on the Gletcher M1891 is single action only, the bolt cycle does most of the work setting up the loading of a BB into the chamber and pre-cocking the bolt spring. The take up is minimal and the release is about medium to light weight. The bolt snaps forward firmly and with a nice clanking sound, you can even feel the weight of it as it moves forward.

Accuracy: I did take the opportunity to do a quick pre-test with my Gletcher M1891. I shot several rounds through my Chronograph and averaged around 430 fps which is a bit higher than the claimed 394. I also shot a couple of magazines at a paper target standing 30 feet back using a semi rested position and was about to get a 1.75 inch 17 round group which is pretty good considering I found it kind of unusual to hold the Gletcher M1891 in this manner. The Gletcher M1891 does take some getting used to since you hold it like a rifle but do not rest it against your shoulder for stability.

Build Quality: The Gletcher M1891 is really well made, you can tell by it's robust weight and how solid the action feels when you draw the bolt back and release it the first time. Everything that would be metal on the real Mosin Nagant is metal on the Gletcher M1891 including the full size dropout magazine that holds both the BB's and CO2. Yes the stock is imitation wood but in some ways it is harder than real wood and may actually hold up better. The finish looks great and I like the silver bolt, as with most electromagnetically coated finishes, the coating is not thick so it will wear off in the high spots fairly easily. Some touch up can solve this problem fairly easily.

Realism: I've never actually put my hands on a real steel Mosin Nagant Rifle but from the photos I viewed online, the Gletcher M1891looks really accurate in terms of being a BB replica. Of course the magazine has been adapted to fit CO2 and BB's but once placed in the gun it is nearly impossible to tell it from a real Mosin Nagant, or I should say a sawn off version of one. The weight of this rifle (5.7 pounds) gives it the feeling of genuineness. The only real giveaway is the imitation wood stock which looks pretty good considering. I have read online that a real Mosin Nagant stock can be adapted to fit the Gletcher M1891 so that would indicate that it is fairly true in size and construction to a real Mosin Nagant Rifle.


  • Very Unique BB gun.
  • A piece of history you can shoot in your back yard.
  • Mostly all metal gun.
  • Nice heavy 5.7 pound weight to it.
  • Adjustable rear sight, at least for elevation.
  • Nice single action trigger.
  • Bolt action feels great and has a firm release.
  • Full size drop out metal magazine that holds both the BB's and the CO2.
  • More fps than claimed and decent accuracy, I expect to get lots of shots out of a single CO2 because of the magazine design.


  • Stock is plastic but looks good considering.
  • No real way to adjust windage and the rear sight does wiggle a bit from side to side which could throw off the aim.
  • Electromagnetically coated finish may be prone to wear in the high spots.

The Gletcher M1891 is one of the most interesting BB guns I have had the opportunity to review, it has history, it's kind of a pistol and kind of a rifle at the same time and in this sawn off configuration it looks both old school and modern. I could almost see it being used as the perfect zombi gun ;) Getting away from it's unique looks, the Gletcher M1891 performs very well, shooting a respectable 430 fps with accuracy that surprised me since I found it a bit hard to hold at first. There is something very gratifying about having to work a bot or lever or the hammer on a single action revolver that makes each shot just that much more precious! If you're looking for that ultimate eye catcher that people will have to take a second look at than this is the one for you.

My YouTube Table Top Video of the  Gletcher M1891 Mosin Nagant Replica BB Rifle:

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Update Video - What is this Mystery 4.5mm CO2 BB Gun?

In this video I show you a very interesting 4.5mm CO2 BB replica rifle. A riffle that has a history in the Russian Military going back to the 1800's, but this one has been modified and in a way almost looks modern.

You will have to watch my YouTube update video to see what this mystery gun is, full table top review to follow this week!


BB Guns Shooting at Longer Ranges

I often get asked about using a 4.5mm Steel BB gun for pest control and to be honest I really don't think a BB gun is the right tool even at close range to properly and humanly take care of pests when need be. A much better tool is a high powered pellet rifle in just about any caliber as long as you have taken the time to practice your shot placement at a variety of ranges.

Pellets on the other hand, since they are shot out of a rifled barrel are generally super accurate, even within an inch or so at long ranges. Steel BB's on the other hand will do OK within 20-30 feet but once they get to the farther out ranges, they tend to drift a lot, making it very hard to predict exactly where they are going to go...

So I thought I would back up my words with a real world test by taking an average mid priced BB rifle and taking aim at some clay pigeon targets setup about 100 feet away. Watch my YouTube video to see how my Umarex Steel Force did shooting in semi auto at 100+ feet out.

Umarex Steel Force Used for this Test:
  • 12 gram CO2 x2
  • 4.5mm Steel BB's
  • AR/M16 Replica
  • Semi auto & 6 Round Burst, Single Action Only
  • 300/30 Round Hopper/Magazine
  • 430+ FPS
  • Plastic with some Metal Construction

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