Sightmark 300 BLK Laser Boresight
This compact laser boresight is designed to fit 300 BLK and .300 Whisper chambers, and includes carrying case, batteries, and instructions.
- Compact and lightweight design fits in any range bag
- Powered by (3) AG3 batteries
- Designed to fit 300 BLK and .300 Whisper chambers
- Tested and recommended by the National Tactical Officers Association
Ratings & Reviews
It works for me
by Phantom30 -
So many bad reviews? I have several of these SightMark bore sight lasers in other calibers and they all work perfectly well. So I took a chance and bought this one. The production date was July 2019, so it might be a newer lot with better QC. It worked just fine. I found it difficult to close the bolt and lock it in so I took the upper inserted it in the chamber and held it tight with my finger. It lite up right on my old scope zero. Changed scopes, new scope zeroed right up with no problems.
Do not eat a bad product
Hey Joe You should send the defective product back so PA can have a chance to make things right with you and so they can inspect the product to let the manufacturer know how to correct the defect
Not a good product
by Jason -
Look elsewhere, don't buy this one. Out of the box, at 25 yards, this laser was sighted off about 6", totally defeating the purpose of a bore sight. I haven't even bothered to try to adjust it yet, because the batteries ran down really quick as a previous review stated. I don't know if its just junk batteries that it ships with, so I ordered some name brand batteries to test with.
Joe, do you think it may have been bad batterys, just wondering.
Do not buy.
by Joe -
This product deserves no stars. Worked for 5 minutes then the laser faded out. Changed the batteries thinking that was the problem and flashed bright for about 5 seconds then same thing. Again I changed the batteries and got the same result. 30 bucks wasted. Ended up just chunking it. Not even gonna trouble primary arms with an exchange or refund. All I ask is that you stop carrying this product. If I had done my research like I normally do I would have seen all the bad reviews elsewhere. My fault and I'll take the loss.