{"product_id":"bad-battlearms-ltwht-8-5-9mm-barrel","title":"Battle Arms Development Lightweight 8.5\" 9mm Barrel – AR-9 Platform","description":"\u003cp\u003eThe Battle Arms Development Lightweight 8.5\" barrel delivers reliable 9mm performance in a compact AR-9 pistol or SBR configuration. Engineered for reduced weight without sacrificing accuracy, this barrel is ideal for home defense, competitive shooting, or range work where maneuverability matters. The 8.5\" length provides optimal velocity from pistol-caliber ammunition while maintaining a manageable overall weapon length.\u003c\/p\u003e\u003cp\u003eManufactured from quality steel with a black nitride finish for corrosion resistance and reduced friction. The 1:10 twist rate stabilizes common 9mm projectile weights from 115 to 147 grains. Compatible with standard AR-9 upper receivers using Glock-style magazine conversions or dedicated 9mm lowers. Note: Building an AR pistol with a barrel under 16\" requires compliance with federal firearms laws; configurations under 26\" overall length may be subject to NFA regulations.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Rifle Barrel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 9mm Luger\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 8.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwist Rate:\u003c\/strong\u003e 1:10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Nitride\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-9 Platform (Glock-mag compatible uppers\/lowers)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Battle Arms Development","offers":[{"title":"Default Title","offer_id":47942713966847,"sku":"BAD-A-BBL85T9MM110BN","price":139.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2855801.jpg?v=1766570642","url":"https:\/\/doublestackstore.com\/products\/bad-battlearms-ltwht-8-5-9mm-barrel","provider":"Double Stack Store","version":"1.0","type":"link"}