--- title: "Sightmark 300 Blackout Laser Boresight" description: "Sightmark laser boresight for 300 Blackout rifles. Brass construction, red aiming dot, 15-100 yard sighting range, carrying case, batteries, and instructions." canonical_url: "https://www.kygunco.com/product/sightmark-sm39043-laser-boresight-cartridge-300-blk" meta: author: KYGUNCO "og:description": "Sightmark laser boresight for 300 Blackout rifles. Brass construction, red aiming dot, 15-100 yard sighting range, carrying case, batteries, and instructions." "og:image": "https://cdn.kygunco.com/assets/products/40/thumbnail.jpg?v=1713457146" "og:image:height": "500" "og:image:width": "500" "og:title": "Sightmark 300 Blackout Laser Boresight" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Optics](https://www.kygunco.com/category/optics) / [Scope Caps & Accessories](https://www.kygunco.com/category/optics/scope-caps-and-accessories) / SGH-SM39043 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/40/main.jpg?v=1713457146) For illustration purposes only, this image may not be an exact representation of the product. # SIGHTMARK Boresight 300 Blackout Laser boresight for 300 Blackout (7.62x35mm) rifles that chambers like a standard cartridge and projects a red aiming dot for sight or scope adjustment. Includes a carrying case, three AG3 batteries, and instructions. Brass construction, on/off end cap operation, and sighting range of 15-100 yards. $35.97 ** 4 interest-free payments of **$8.99** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled Almost gone. Order now before it sells out. Item # 40 Style SGH-SM39043 UPC 810119019448 Condition New Manufacturer [Sightmark](https://www.kygunco.com/brand/sightmark) Weight 1 lb ### Sightmark 300BLK (7.62x35mm) Laser Boresight Chamber the Sightmark® 300BLK (7.62x35mm) Boresight in your rifle like a regular cartridge, and a red laser dot shows exactly where you're aiming. Ideal for hunters, competitive shooters and law enforcement, this device significantly reduces wasted cartridges and shells. Simply adjust your sights or scope, and save your extra ammo for the hunt. Includes a carrying case, three (3) AG3 batteries, and instructions. **### Features:** **Laser Wavelength:** 632-650 **Output Power, mW:** <5 **Battery Type:** 2x AG5 or 3x AG3 **Battery Life:** 1 hrs **Range For Sighting, yd:** 15-100 **Dot Size:** 2 in. @100yds **Operation:** on/off end cap **Construction:** brass **Operating Temperature:** 15 to 120 ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Sightmark ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/sightmark-sm39043-laser-boresight-cartridge-300-blk#webpage","@type":"WebPage","description":"Sightmark laser boresight for 300 Blackout rifles. 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