Description
Zeroing a fresh scope or fixing up your SKS or AK irons can chew through a surprising amount of 7.62x39mm before you ever land on paper. The Aim Sports PJBS76239 takes the guesswork out of that first step. It's a cartridge-style laser boresighter shaped like a live round, so it chambers just like a regular cartridge and projects a red laser straight down the bore axis. Line your reticle or your sights up with that dot on a target and you'll be close to where you need to be before you ever touch off a round.
What the PJBS76239 Brings to the Bench
This one is built around a brass case with a 5mW red laser running in the 635 to 655nm range, which is the same visible red you see on most affordable pointers and boresighters. The brass body is soft enough that it won't chew up your chamber, and the whole thing is tiny and light enough to live in a range bag pocket without you ever noticing it's there. Power comes from a single LR41 button cell that sits inside the case, and it's simple enough that anyone can put it to work the first time out.
Getting Zeroed With the Aim Sports Boresighter
Worth remembering: boresighting isn't the same as a true zero. What this tool does is get you on paper fast so the real fine-tuning takes a couple of shots instead of half a box. Set your rifle on a solid rest, chamber the boresighter, put the laser dot on your target, then adjust your optic or irons until they agree with the dot. From there a shot or two dials in your actual point of impact. It works great on semi-autos like the AK and SKS where you can't just pull the bolt and eyeball down the barrel.
It's an inexpensive tool that pays for itself in saved ammo, especially with 7.62x39mm prices being what they are. Toss one in the bag for new builds, scope swaps, or a quick sanity check after your optic takes a knock in the field.
Key Specifications
- Manufacturer: Aim Sports
- Manufacturer Part Number: PJBS76239
- UPC: 815879011626
- Caliber: 7.62x39mm
- Product Type: Laser Boresighter
- Style: Cartridge
- Mount: Chamber
- Laser Color: Red
- Laser Output: 5mW
- Wavelength: 635 to 655nm
- Case Material: Brass
- Battery Type: LR41
- Weight: 0.05 oz
- Quantity: 1
What’s Included
- Aim Sports PJBS76239 7.62x39mm cartridge laser boresighter
- LR41 battery (installed)
Frequently Asked Questions
How does the Aim Sports PJBS76239 boresighter work?
It's shaped like a cartridge, so you chamber it in your 7.62x39mm rifle just like a regular round. Once chambered, it shines a red laser straight down the bore and projects a dot onto your target. You then adjust your scope or iron sights until they line up with that dot, which gets you on paper before you fire a shot.
Does the PJBS76239 fully zero my rifle by itself?
No, and it's important to know the difference. Boresighting gets your optic roughly aligned with the barrel so you land on paper quickly, but a true zero still takes a couple of live rounds to confirm your actual point of impact. Think of it as a big head start that saves you a lot of ammo, not a replacement for shooting.
Will this boresighter work in an AK or SKS?
Yes. Because it chambers like a cartridge instead of relying on a bolt you remove, it's ideal for semi-autos like the AK platform and the SKS where you can't just pull the bolt and look down the bore. Set the rifle on a stable rest for the most consistent results.
What battery does the Aim Sports 7.62x39mm boresighter use?
It runs on a single LR41 button cell that sits inside the brass case. One usually comes installed, but it's smart to keep a spare or fresh cell on hand since these small batteries can drain or corrode over time in storage. Popping in a fresh battery before a range trip keeps the dot bright.




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