Teslong NTG500H Borescope

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Teslong sent me their TS NTG500H rifle borescope kit to test and evaluate. The package comes in a long padded box containing the ≥26″ long wand/probe, a USB-C charging cable, a USB-C video cable, a USB-A/Mini video cable, a display monitor and video recorder (with a 32GB SD card), and a set of 4 right angle adapters for various rifle calibers:

(5mm) diameter for .22 caliber & larger
(6mm) diameter for 6.5 Creedmore & larger
(7mm) diameter for .30 caliber & larger
(8.5mm) diameter for .38 caliber & larger
(12mm) diameter for .50 caliber & larger

The display monitor also functions as a recording device able to take still photos and video in 720p. Using the USB-A/mini adapter cable, you can connect the wand directly to a tablet or PC. I attempted to test it on my Samsung S21+ phone but was greeted with an Android warning message saying USB video was disabled, which was more of an issue with the 3rd party endoscope App I had downloaded than this device.

The wand/probe has .20 cal diameter allowing it to be used with tight bore .22cal rimfire rifles. The wand has etched inch markings along its length and a white washer plug that help you mark the depth of the probe. This helps you more easily note and return to a specific area of interest in your barrels such as deposits, burrs, and cracks. The rigid wand does make controlling the direction of the probe much easier than non-rigid endoscopes I’ve used.

The video taken with the display was quite good, comparable to other borescope/endoscopes I’ve owned. Not having to download dodgy 3rd party App software on my phone is a plus. It has a built-in rechargeable battery and even a built-in flashlight should you need it.

The unit is a bit pricier than similar borescopes or Teslong’s non-rigid endoscopes. I would have liked a 1080p camera but this may be unnecessary since the tiny sensor at the end of the probe may not actually record details higher than 720p, a larger 1080p file may be over-sampling.

A common issue with new users are complaints of an out-of-focus image. This borescope (and many others this small) are not an auto-focus camera. The focus must be manually adjusted by the user by turning the right-angle mirror to the appropriate number of turns onto the wand. This will vary depending on the size of the barrel. The user must adjust the mirror and lock it in place with the tiny locking ring at the end of the wand. One revolution either way could mean the difference between a blurry mess and a tack sharp image.

Not only are they useful for cleaning and maintaining your new firearms but could be invaluable in evaluating a vintage or collectable C/R rifle. Seeing the condition of the inside of a barrel could mean the difference between paying for Field Grade and paying for Display Grade.

Support this website by purchasing this product through my Amazon affiliate link: https://amzn.to/3S2oYhm


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GRAND PRIZE: Teslong Rifle Borescope & Evike.com Package ($325 value)

The Grand Prize will be chosen from all contest entries submitted from July 28, 2022 through August 28, 2022. Entries must be received no later than 12pm EST on August 28, 2022.

Congratulations Steve Dannuzio of California for winning the contest!


1. Subscribe or follow my YouTube Channel (Moondog R&D), TikTok, and/or Instagram

2. Take a screen shot of the channel screens showing you have subscribed/followed and email it to me

3. Email me with the Subject: “Borescope Contest”
• Attach the JPG or PNG screen shot
• Include your full name and ship-to address in the email (so I can confirm you live in the US or Canada)

Use the button email below or email me directly at: contest@moondogindustries.com

4. BONUS: Share this with a friend and get them to enter the contest too. Ask them to reference your name and email address in the body of their message ie. “My buddy johndoe@gmail.com clued me into the contest”, and I’ll award you an extra-bonus entry to the contest. It’s important that they reference your email so I can easily look up your entry. Each friend that subscribes and refers to you in their email will earn you another bonus entry for a maximum of 10 entries (including yours).



1. Eligibility

Void where prohibited by law. Must be legal resident within the USA or Canada. Moondog Industries employees, subsidiaries, affiliates, suppliers, advertising and promotion agencies, employees’ immediate family members, are ineligible participate in the contest/giveaway.

Entrants must be willing and able to appear on YouTube to discuss the contest and post images of the prize on their social feed should they win the contest.

2. Sponsors & Platforms

Moondog Industries (known as the SPONSOR) is a video Edutainment producer and game promotor based in San Francisco, CA. YouTube, TikTok, Rumble, and online video platforms (known as PLATFORMS) are not SPONSORS or in any way affiliated with the contest or content.

3. Agreement to Rules

By entering your contest, participants agree to abide by the SPONSOR’s Official Rules and decisions. The SPONSOR retain the right to refuse, withdraw, or disqualify entries at their sole discretion. By submitting an entry, the participant agrees to accept the decision of the SPONSOR as final and binding.

4. Entry Period

Contest email entries must be received by between:
12:00pm EST 28 July 2022
12:00pm EST 28 August, 2022.

5. How to Enter

This contest requires your skill in navigating your phone or computer controls to screen capture an image of the following YouTube channels/Social Media accounts. Subscribe or Follow and make a screen capture of those pages showing a greyed out Subscribe button or indicator that your account is Following that page. Send a screen capture image file of any of those sites to contest@moondogindustries.com . One entry per person or per Social Media account/platform. Fraudulent methods of entry, photo retouched, or other methods of circumvention of the rules may result in the SPONSOR invalidating a participant’s entries.

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Winner must be able to receive the prize by e-mail or by physical mail. Prize may be substituted at the sole discretion of the SPONSOR. Acceptance of the prize grants SPONSOR permission to use the Winners entry, name, and likeness for advertising, promotion, and trade without further compensation or remuneration unless prohibited by law.

7. Odds

Odds of winning is dependent upon the number of eligible entries received.

8. Selection and Notification of the Winner

The winner will be chosen at random by the SPONSOR from among the entrants that demonstrated the skill to navigate the electronic entry and have met the minimum requirements. Winners will be contacted via the email used to enter the contest no later than December 31, 2022.

SPONSOR are not liable for the winner’s failure to receive notification of winning if he or she provided a wrong email address or if their email security settings caused your prize notification to go into the spam or junk folder. If a winner does not respond within 24hrs of sending a notification, the SPONSOR will select an alternate winner. Receipt of the prize is upon the condition of compliance with federal, state, and local laws.

9. Rights Granted by the Entrant

The SPONSOR, upon submission of an entry into the giveaway or contest, has the right to use the participant’s submission, voice, likeness, image, statements about the contest, etc., for publicity, news, advertising, promotional purposes, trade, and so forth, without any further notice, review, consent, compensation or remuneration.

Participants shall defend or settle against such claims at their sole expense, and shall indemnify, defend and hold harmless the SPONSOR from any suit due to damage of or by the prize.

10. Terms & Conditions

The SPONSOR reserves the right to modify, suspend, cancel or terminate in the event that non-authorized human intervention, a bug or virus, fraud, or other causes beyond your control impact or corrupt the security, fairness, proper conduct, or administration of the contest/giveaway.

11. Limitation of Liability

Entry into this contest constitutes the participants agreement to release and hold harmless the SPONSOR and PLATFORMS, their subsidiaries, affiliates, employees, etc., against all claims liability, illness, injury, death, loss, etc., that occurs directly or indirectly from participation in the contest or use/misuse of the awarded prize.

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As a condition of participating in the promotion, the participant agrees to resolve all disputes with an arbitrator designated by the SPONSOR in the state of California, without resorting to any form of class action. Entrants waive all rights to punitive, incidental, or consequential damages, and waive all rights to have damages multiplied or increased.

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Participants agree to abide by all privacy and NDA laws in the State of California and any federal laws of the United State of America.

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Participants may request a list of winners by submitting a request in writing to Moondog Industries for up to 30 days after the contest ends.

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Winners will agree to post a photo of the prize on their social media channels in such a way as does not violate any rules of that platform. The winners also agree to appear for an interview where they will discuss the prize and its performance. If there are functional problems with the prize, the winner agrees to make a good-faith effort to resolve all issues with the SPONSOR prior to posting reviews or opinions about the prize.

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