Osprey Global In-chamber Laser Boresights (9mm, .223/5.56mm and 7.62 x 39mm)
One of the biggest challenges for all shooters is sighting in their forearms. It’s a process – and if you don’t know how to systematically approach it you can get very frustrated. Luckily, over the past couple of years laser boresight devices have come a long way, in physical form, range and accuracy, to help support you in your efforts to sight in a firearm.
Until recently we never bothered with laser boresights because of a variety of issues: (1) had to be bolted on and aligned prior to use, (2) too bulky, (3) not strong enough to illuminate a target either outside or beyond 20 yards, (4) insufficient accuracy and (5) poor battery life. However, because of recent technical improvements, we decided to give it a go and purchased three Osprey Global “in-chamber” laser boresights: a 9mm Red Laser Boresight, a .223 (5.56mm) Green Laser Boresight and a 7.62x39 Red Laser Boresight. Each of these boresights is constructed like a round for your firearm and is made from high quality brass to ensure reliability and durability.
To use the boresights all you have to do is screw off the base (equivalent to the “rim” on an actual round), insert the batteries, screw the base back on, load the boresight into the chamber of your firearm and close the breech. (Note: Once you insert the batteries the laser will activate and project from the front of the boresight – so be careful where you point it as you load it into your firearm; and don’t insert the boresight into the chamber if the firearm is hot.) After you have the laser boresight in the firearm, point it downrange at a target and adjust your sights to align with the laser dot on the target. The laser, which has been calibrated in the cartridge, is projected down the firearm’s barrel and will get you within a couple inches of center so that you can adjust your sights as appropriate. From there you can remove the laser boresight from the chamber and proceed to make the final fine sight adjustments. The “red” lasers use three LR41H/LR41/AG3/392A Alkaline 1.5V batteries and the green laser uses six (6). There are several in-chamber boresights currently on the market and we liked both the Sightmark and Osprey Global products – but purchased the Osprey boresights since they were immediately available. The boresights are backed by a lifetime warranty. You can read more about these in-chamber laser boresights on our Shooting/Range Items and Tools page.
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