--- title: "Rock River Arms X-1 308 Win Semi-Auto Rifle" description: "Black 308 Win semi-auto AR10 rifle with an 18\" fluted stainless steel barrel, 20rd capacity, two-stage trigger, free-float rail, and optic-ready design." canonical_url: "https://www.kygunco.com/product/rock-river-arms-xbt31751b.v1-lar-bt3-x-1-308-win-18-20rd-blk-oem-a2-operator" meta: author: KYGUNCO "og:description": "Black 308 Win semi-auto AR10 rifle with an 18\" fluted stainless steel barrel, 20rd capacity, two-stage trigger, free-float rail, and optic-ready design." "og:image": "https://cdn.kygunco.com/assets/products/240049/thumbnail.jpg?v=1713456234" "og:image:height": "500" "og:image:width": "500" "og:title": "Rock River Arms X-1 308 Win Semi-Auto Rifle" --- > 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) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Rifles](https://www.kygunco.com/category/shooting/guns/rifles) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/rifles/semi-auto) / RCK-XBT31751B.V1 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/240049/main.jpg?v=1713456234) For illustration purposes only, this image may not be an exact representation of the product. # ROCK RIVER ARMS LAR-BT3 X-1 308 Win 18" 20rd Semi-Auto AR10 Rifle | Black The Rock River Arms X-1 is a black semi-automatic AR10 rifle chambered in 308 Win with an 18" fluted stainless steel barrel, 20+1 capacity, two-stage trigger, free-float rail, and optic-ready configuration. It includes an RRA A2 Operator stock, Hunter muzzle brake, aluminum receiver, rifle case, and one magazine. $1,742.70 ** 5 interest-free payments of **$348.54** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$213.51**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** Ships To FFL Dealer Fulfilled by a partner warehouse. ** Partner Fulfilled ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Almost gone. Order now before it sells out. Item # 240049 Style RCK-XBT31751B.V1 UPC 842834108435 Condition New Manufacturer [Rock River Arms](https://www.kygunco.com/brand/rock-river-arms) Model LAR-BT3 Hand Right Hand Finish Black Round Capacity 20 Caliber 308 Win Action Semi-Auto Barrel Length 18 in Rock River Arms X-1 rifle comes out of the box without any changes needed to be made. This rifle has a custom Operator Carbine Stock, Hogue grip, two stage trigger, winter trigger guard, low profile gas block, 18 inch fluted barrel, Hunter muzzle brake, free float rail, an 1 MOA accuracy. This tactical long range rifle comes in a Rock River Arms Case with one magazine. Its is optic ready for the shooters choice. - Action: Semi-Auto - Caliber: 308 Win - Barrel Length: 18" - Capacity: 20+1 - Trigger: Two-Stage - Safety: Safety Selector Switch - OAL: 40.50" - Weight: 9.50 lbs - Stock Description: RRA A2 Operator - Muzzle: RRA Hunter Muzzle Brake - Receiver Material: Aluminum - Sights: Optic Ready - Barrel Description: Fluted Stainless Steel - Twist: 1:10" - Barrel Length Range: 18" to 18.99" - Weight Range: 9 lbs to 9.99 lbs - Hand: Right - Stock Finish Group: Black ** 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). ## Frequently Bought Together 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```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/rock-river-arms-xbt31751b.v1-lar-bt3-x-1-308-win-18-20rd-blk-oem-a2-operator#webpage","@type":"WebPage","description":"Black 308 Win semi-auto AR10 rifle with an 18\" fluted stainless steel barrel, 20rd capacity, two-stage trigger, free-float rail, and optic-ready design.","name":"Rock River Arms X-1 308 Win Semi-Auto 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