Description
Here are two very useful videos that demonstrate the installation of the lens.
$112.00
Lens fits the GoPro 2, 3 and 4.
This is a high-quality GoPro customized lens with special coatings and a large wide lens to get maximum light to GoPro camera when using Gopro on the rifle scopes, when using it for scope cam such as air gunning, air soft, paintball, hunting, etc. This lens is not a fisheye lens and because it is 12mm you will not need to do a bunch of post editing to get the image large enough to share.
You will need to leave the square glass lens protector off because the lens protrudes beyond the housing. This doesn’t matter as the GoPro will be in a case once on the scope camera housing.
Item includes:
I also stock the 1/2.3″ version but this 1/1.8″ version (this one) is better because the lens allows more light to the camera for brighter images.
Please note:
The GoPro it’s not included, it is only shown so one can see what the lens looks like installed.
6 in stock
Here are two very useful videos that demonstrate the installation of the lens.
| Weight | 2 oz |
|---|---|
| Dimensions | 3 × 3.5 × 1.25 in |
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for .177, .22 and .25 NOT .30

Part fits Umarex Gauntlet 177, .22 or .25. Not compatible with the Gauntlet .30 Caliber.
This part is designed and manufactured by DonnyFL
Gauntlet STK
THIS ITEM IS NOT DESIGNED FOR THE GAUNTLET 30
IT HAS ITS OWN HAMMER PRELOAD ADJUSTER STOCK
Kits available to fit Gauntlet 1, Gauntlet 2, Gauntlet 2 SL, or Gauntlet 2 Limited 22/25, variants.
The single largest performance increase modification item for the Gauntlet. The Super Tune Kit allows complete power adjustment, opening the possibility of higher or lower foot-pounds (FPE) for whatever the user desires. Do you need only 5FPE? No problem back off the adjustment using a 5/64″ allen wrench and you are only delivering 5FPE and will realize over 200 shots on a stock bottle fill of 3000PSI!
Want 27-30FPE for dropping that 20lb trash bandit, no problem, crank up the adjuster using a 5/64″ allen wrench and you instantly have the power necessary for either long range or high energy delivery on target. The use of a chronograph is required to know the rate of travel of the projectile. (Power examples given are the .22 caliber version Gauntlet 1)
For the Gauntlet 1 and Gauntlet 2. Be sure to select the proper generation, as there is a difference, and improperly selected kits are not returnable.
BE SURE TO SELECT THE CORRECT GENERATION GAUNTLET
CONTENTS:
Be sure to follow my written instructions in the document below.
Use the video to install but follow these written instructions to adjust and tune the STK:
Written Detailed Tuning Instructions for the STK
More details below.
Always read the content below because any revised instructions, video, photos, or other links will be there.
For G1 G2 & G30 Variants
Hajimoto Productions Tuning O-ring kit for the Gauntlet and Gauntlet 2
Now includes two of my “NO RING” pellet probe seals as HP-1 rather than the typical high wear donut orings.
I have put together the most common o-rings that fail during a tuning session. Most of the stock o-rings for the internals will gouge when the airgun is disassembled, this kit will allow you multiple attempts should any of the o-rings fail. Please note that the .30 caliber uses completely different internal o-rings than all previous Gauntlet Models including the .30 cal exclusive transfer port orings Which will be bagged as TP.
Some of the NO-Ring seals have the leading edge precision ground.

These tapered / precision ground types need to be installed as shown below
(Images are of the .30 caliber NO RING)
You get:
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