Sightmark .243 Win / .308 Win / 7.62x54r Laser Boresight

Manufactured by Sightmark
SKU: SM39005
MPN: SM39005
Manufactured by Sightmark
4 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details



The Chamber Laser Boresight gets you on target quickly without wasting a single round. Simply drop the boresight into your chamber like a standard cartridge, and the bright 632-650nm red laser will show you exactly where your rifle is aiming. When done, it ejects just like an empty casing, clearing your chamber allowing you to go straight to live fire, without the risks of forgetting a bore-mounted sight.

This compact laser boresight is designed to fit .243 Win, .308 Win, and 7.62x54r chambers, and includes carrying case, batteries, and instructions.

Note: Rim will not engage with 7.62x54r extractors and may require manual extraction.


  • Compact and lightweight design fits in any range bag
  • Powered by (3) AG3 batteries
  • Designed to fit .243 Win, .308 Win, and 7.62x54r chambers
  • Tested and recommended by the National Tactical Officers Association
See More


Caliber Gauge.308 Win
TypeLaser Boresight
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

4 reviews


Now here we go...


For 54r this sight does not fully seat. Atleast in a vepr, I have not tried it in a mosin, but I would imagine it has the same effect. I gove it three stars because even though it does not seat perfectly to get true zero. It does get you pretty damn close though so it works close enough. I mean within 5" of center. For reference, rifle is a 20" vepr in 54r, with 1-6x24ACSS optic. Shoots 1.5" at 100yards with 180gr serbian sniper ammo. This sight did well to get me on paper. Further sighting in is required for this caliber. I hope this helps.



I have purchased this same bore-sight previously, but forgot to pack it during my move. It is well made and simple to use. The only minor issue is, the batteries must be removed after sighting.

Laser bore sight

by -

Easy to use , and allows quick sight in. Works well, and saves hard to get ammo. Shipping was fast ! Primary Arms is the best. Satisfied customer.

so cruced it hits the riflings

by -

This laser bore site is off my 10 inch at 100ft. It hits the riflings inside the barrel. I put the laser on a flat surface and rolled it to find the high side and mark it. By rotating the laser 180 deg and marking the target i was able to see how far off it is. 10 inch off at 100ft is kinda junk.