--- title: "Sightmark 20 Gauge Laser Boresighter Cartridge" description: "Brass laser boresighter cartridge for 20 gauge shotguns. Includes a carrying case, three AG3 batteries, and instructions." canonical_url: "https://www.kygunco.com/product/sightmark-sm39008-laser-boresighter-cartridge-20-gauge" meta: author: KYGUNCO "og:description": "Brass laser boresighter cartridge for 20 gauge shotguns. Includes a carrying case, three AG3 batteries, and instructions." "og:image": "https://cdn.kygunco.com/assets/products/43/thumbnail.jpg?v=1713456669" "og:image:height": "500" "og:image:width": "500" "og:title": "Sightmark 20 Gauge Laser Boresighter Cartridge" --- > 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-SM39008 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/43/main.jpg?v=1713456669) For illustration purposes only, this image may not be an exact representation of the product. # SIGHTMARK Laser Boresighter Cartridge 20 Gauge Sightmark 20 gauge laser boresighter cartridge for chamber use on 20 gauge shotguns. Brass cartridge style with AG3 battery power, and it includes a carrying case, three AG3 batteries, and instructions for setup. $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 # 43 Style SGH-SM39008 UPC 810119010070 Condition New Manufacturer [Sightmark](https://www.kygunco.com/brand/sightmark) Weight 1 lb ### Sightmark 20 Gauge Laser Boresighter Cartridge Chamber Brass Perfect for hunters, competitive shooters and law enforcement, the Sightmark 20G gauge boresight delivers exceptional accuracy for your 20 gauge shotgun. At 100 yards, the device will project a 2-inch image on paper, saving you money on ammunition. Includes a carrying case, three AG3 batteries, and instructions **### Features:** **Brand:** Sightmark **Series:** 20 Gauge **Type:** Laser Boresighter **Material:** Brass **Style:** Cartridge **Battery:** AG3 (3) **Mount:** Chamber ** 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-sm39008-laser-boresighter-cartridge-20-gauge#webpage","@type":"WebPage","description":"Brass laser boresighter cartridge for 20 gauge shotguns. 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