--- title: "Sightmark .300 Boresight Red Laser" description: "Brass boresight for .300 rifles with a visible red laser and on/off end cap. Includes carrying case, three AG3 batteries, and instructions." canonical_url: "https://www.kygunco.com/product/sightmark-sm39006-laser-boresight-300-win-brass" meta: author: KYGUNCO "og:description": "Brass boresight for .300 rifles with a visible red laser and on/off end cap. Includes carrying case, three AG3 batteries, and instructions." "og:image": "https://cdn.kygunco.com/assets/products/36/thumbnail.jpg?v=1713457139" "og:image:height": "500" "og:image:width": "500" "og:title": "Sightmark .300 Boresight Red Laser" --- > 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-SM39006 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/36/main.jpg?v=1713457139) For illustration purposes only, this image may not be an exact representation of the product. # SIGHTMARK Boresight 300 Winchester Boresight for .300 rifles that chambers like a regular cartridge and projects a visible red laser dot to help align your sights or scope. Includes a carrying case, three AG3 batteries, and instructions. Built in brass with an on/off end cap and a sighting range of 15 to 100 yds. $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 Selling fast. Limited quantities available. Item # 36 Style SGH-SM39006 UPC 810119010056 Condition New Manufacturer [Sightmark](https://www.kygunco.com/brand/sightmark) Weight 1 lb ### Sightmark 300 Boresight Chamber the Sightmark® .300 Boresight in your .300 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 nm **LED Type:** Visible red laser **Output Power:** <5 mW **Battery Type:** AG5 2 **Battery Type:** AG3 3 **Battery Life:** 1 hour **Range for Sighting:** 15 - 100 yds **Dot Size:** 2 in @100yd **Operation:** on/off end cap **Material:** Brass **Operating Temp:** F/C 14 to 122 / -10 to 50 F/C ** 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-sm39006-laser-boresight-300-win-brass#webpage","@type":"WebPage","description":"Brass boresight for .300 rifles with a visible red laser and on/off end cap. 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