--- title: "Steyr Arms 300 AAC Blackout AUG Conversion Kit" description: "Convert an AUG from 5.56x45mm to .300 AAC Blackout with a 16\" barrel and no tools. Includes trigger spring kit and Standard AUG magazine." canonical_url: "https://www.kygunco.com/product/steyr-arms-aug-300blkout-barrel-kit" meta: author: KYGUNCO "og:description": "Convert an AUG from 5.56x45mm to .300 AAC Blackout with a 16\" barrel and no tools. Includes trigger spring kit and Standard AUG magazine." "og:image": "https://cdn.kygunco.com/assets/products/256203/thumbnail.jpg?v=1718307703" "og:image:height": "500" "og:image:width": "500" "og:title": "Steyr Arms 300 AAC Blackout AUG Conversion Kit" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Rifle Barrels](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/rifle-barrels) / STY-US1256010760 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/256203/main.jpg?v=1718307703) For illustration purposes only, this image may not be an exact representation of the product. # STEYR ARMS 300 AAC Blackout Kit Conversion kit for the AUG that changes a 5.56x45mm setup to .300 AAC Blackout with a 16" barrel. Requires no tools or additional parts and includes a 6-position adjustable gas regulator, 5/8 x 24 threading, 1:8" twist, an enhanced trigger spring kit that reduces felt pull by 2-3 lbs, and a 30-round magazine for the Standard AUG only. $729 ** 5 interest-free payments of **$145.80** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$130.15**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Selling fast. Limited quantities available. Item # 256203 Style STY-US1256010760 UPC 688218828335 Condition New Manufacturer [Steyr Arms](https://www.kygunco.com/brand/steyr-arms) Caliber 300 AAC Blackout, 223 Rem Weight 2 lb This 16 inch barrel for the AUG converts the AUG from 5.56x45mm to .300 AAC Blackout. With just a push of a button, the 5.56x45mm barrel can be removed and replaced with the .300 AAC Blackout barrel. This conversion requires no tools or any additional parts. The .300 AAC Blackout barrel is capable of firing both super-sonic and sub-sonic ammunition. The adjustable gas regulator has six settings. The barrel is threaded 5/8 x 24 and sports a 1:8″ twist rate. This kit also includes The AUG Enhanced Trigger Spring kit. The Trigger Spring Kit reduces felt trigger poundage by 2-3 lbs. This spring kit works with both Standard and NATO trigger packs. Also included in this kit is the 30 round .300 AAC Blackout Magazine for the STANDARD AUG. This magazine is specially designed to be used in conjunction with the .300 AAC Blackout barrel for the STANDARD AUG. This magazine WILL NOT WORK with the NATO AUG. If your gun accepts STANAG magazines, this magazine WILL NOT WORK in your gun. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** 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 Steyr Arms ```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/steyr-arms-aug-300blkout-barrel-kit#webpage","@type":"WebPage","description":"Convert an AUG from 5.56x45mm to .300 AAC Blackout with a 16\" barrel and no tools. 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