The AimShot Arbor .243 Win for use with .223 Laser Boresight (AR243, UPC 669256002437) is a precision-machined brass chamber arbor that transforms your AimShot .223 laser boresight into a powerful, multi-caliber bore-sighting system for .243 Winchester and a wide family of .308-based cartridges. Instead of buying a separate laser for each rifle, you drop your .223 AimShot laser into this AR243 arbor and you’re ready to quickly and accurately bore sight dozens of popular hunting and precision calibers. AimShot+2KYGUNCO+2
Universal .243 / .308 Family Arbor for the AimShot .223 Laser Boresight
The AR243 is part of the AimShot Universal Laser Boresight system—a modular design that uses a central .223 Rem laser module plus caliber-specific arbors to cover a huge range of rifles. KYGUNCO+1
This arbor is designed to work with:
Once the .223 laser is inserted into the AR243 shell, the combo becomes a caliber-correct boresighter that indexes off the chamber of your .243/ .308-based rifle for consistent, repeatable alignment.
One Arbor, Many Calibers – Extensive .308-Based Compatibility
Although it’s labeled as a .243 Win arbor, AimShot machines the AR243 to fit an extensive list of .308 Winchester–based and related cartridges. According to the manufacturer and major retailers, this single arbor will bore sight all of the following chamberings: AimShot+1
Chambers this Arbor Fits:
That means one compact brass arbor lets you bore sight a whole lineup of deer, elk, and long-range calibers using the same .223 laser module—perfect for shooters with multiple rifles or gun shops that set up optics for customers.
Precision Brass Construction – Safe for Your Chamber
The AimShot AR243 is built from solid brass, the ideal material for chamber inserts and arbors: it’s durable but still softer than your steel barrel. Impact Guns+1
Benefits of brass construction:
Will not scratch or gouge your chamber under normal use
Naturally corrosion resistant and easy to wipe clean
Machines to tight tolerances for a snug, repeatable fit in the chamber
Retail listings specifically note that the AR243 is a brass arbor, style “bore sighter,” caliber .243/.308/7mm-08, confirming both its material and multi-caliber design. Impact Guns
How the AimShot AR243 Bore-Sighting System Works
AimShot’s universal system is designed to be fast, accurate, and inexpensive compared to sighting in with live ammo alone. KYGUNCO+1
Using the AR243 is simple:
Insert the laser
Chamber the combo
Place the arbor/laser assembly into your rifle’s chamber just like a cartridge for any supported caliber (.243, .308, 7mm-08, etc.). AimShot+1
Align your optics
Aim at a safe target at your chosen zero distance.
Turn on the laser and adjust your scope, red dot, or LPVO until the reticle lines up with the laser point.
Confirm with live fire
Always follow strict firearm safety rules and verify the rifle is unloaded before inserting any bore-sighting device.
Save Time, Save Ammo & Get On Paper Faster
The AimShot Universal Laser Bore Sight system is widely described as one of the most complete, accurate, easy, and inexpensive ways to bore sight your weapon. KYGUNCO+1
Using the AR243 arbor with your .223 laser boresight helps you:
Cut down ammo cost – fewer rounds wasted searching for zero
Speed up optic swaps – quickly re-zero after changing scopes or mounts
Simplify setup for new shooters – students start close to zero instead of chasing shots off paper
Verify zero after travel – a quick laser check before hunting trips or matches
For shooters who own multiple .243, .308, and related rifles, the AR243 pays for itself quickly in saved ammunition and reduced frustration.
Compact, Lightweight & Range-Bag Ready
Even though it supports an impressive list of calibers, the AimShot AR243 arbor is very compact and light. Retail listings describe it as a single brass arbor—no batteries or extra mounts required. Impact Guns+1
Small enough to live in your range bag or rifle case
Quick to install and remove at the bench
Easy to clean and store between uses
Pair it with your .223 laser boresight and you have a portable, grab-and-go bore-sighting kit for a huge portion of common hunting and precision rifle cartridges.
Ideal for Hunters, Precision Shooters & Gun Shops
The AimShot AR243 .243 Win arbor is a smart choice for:
Big-game hunters running .243, .308, .338 Federal, .260 Rem, and similar cartridges
Precision rifle shooters who need efficient optic setup across multiple rigs
Gun shops and ranges that mount optics and need a fast, repeatable bore-sighting solution
Instructors and armorers responsible for fleets of .308-based rifles
If you regularly work with long-action or short-action .308-family rifles, keeping an AR243 in your toolkit makes optic setup and verification much easier.
Key Features & Specifications – AimShot AR243 Arbor .243 Win
If you’re looking for a versatile .243 Win / .308-family arbor that turns your AimShot .223 laser boresight into a multi-caliber bore-sighting solution, the AimShot AR243 Arbor .243 Win (AR243, UPC 669256002437) is a compact, brass-built tool that saves time, saves ammo, and makes zeroing optics across your rifle collection faster and easier than ever.
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