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About Sightmark SM39021

The Sightmark .22 LR Premium Laser Bore Sight provides the most convenient and accurate method for sighting in rifles and shotguns of all types. Simply chamber the boresight like a regular bullet and a laser dot will show exactly where the rifle is aiming. It's easy to sight in any scope without firing a single shot. Live fire is only needed to fine tune the weapon being sighted in order to compensate for inconsistencies, such as bullet drop due to distance. Perfect for hunters, competitive shooters and law enforcement, the Sightmark Laser Bore Sight is sure to take the frustration out of sighting in almost any gun. It's easy to use and will quickly save both time and money by avoiding prolonged live fire tests at the range; use the extra ammo for honing those shooting skills and for the hunt.

Sightmark SM39021 Features

  • Precision accuracy
  • Reliable and durable
  • Fastest gun zeroing and sighting system
  • Reduce wasted cartridges and shells
  • Compact and lightweight
  • Easy to pack and travel
  • Long battery life

Sightmark SM39021 Specifications

Laser Wavelength
632 - 650 nm
LED Type
Visible Red Laser
< 5MW
Battery Life
Approx 30 min
Range for sighting (yd)
Dot size
2" at 100yd (50.8mm at 91.4m)
External battery pack with slide switch
14deg.F to 122deg.F (-10deg.C to 50deg.C)
Mfr #

Sightmark SM39021 Reviews

Reviewed by 3 customers


Second chance failed


from Las Vegas, Nv  -  Gun Collector

I got one and it broke within one day. Returned it and had another one sent to me. When I opened the second one, it would not turn on. I'm returning this second chance order. I'll ask for a credit to my credit card.


Not as good as I thought it would be


from Clermont Florida  -  Competitive Shooter

In order for the beam not to hit the inside barrel wall, unit had to be held in place with my finger. It was not a tight fit at all. Could'nt close the cylinder due to the wire exposed. Would only buy a bore sighter that fits into the muzzle. This is almost usless. Sorry guys.


Be prepaired to return this product


from LasVegas, NV  -  Gun Collector

This is a great idea when considering the price of ammo today. The laser chambers well and seems effective for short ranges. If you DO NOT plan to use it more than once or twice, it may be a good idea. However, I am a .22 LR firearms collector and require zeroing sights more often. For me the implementation of this product is poor. The wire leading from the battery box, and the connection to the laser, are VERY POOR. With little use, THE WIRE WILL BREAK! Once broken, there is no reconnecting the wire. You're done. If they ever change to a solid core wire that can be trimmed and reinserted into the laser connection when the wire breaks (and it will, soon), this will be a worthwhile product. Until then, it's a toy that will not last long.

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