{"product_id":"ballistic-bbl-5-56-16-hbar-mid-1-7","title":"Ballistic Advantage 5.56 NATO 16\" HBAR Mid-Length Barrel 1:7 Twist – AR-15 Platform","description":"\u003cp\u003eThis 16-inch heavy barrel profile from Ballistic Advantage delivers enhanced rigidity and heat dissipation for sustained strings of fire. The mid-length gas system reduces felt recoil and cyclic rate compared to carbine-length systems, improving controllability and extending component life. The 1:7 twist rate stabilizes bullets from 55 to 77 grains, making this barrel well-suited for both general-purpose and precision-oriented AR builds.\u003c\/p\u003e\u003cp\u003eConstructed from 4150 Chrome Moly Vanadium steel with a black nitride finish for corrosion resistance and bore longevity. The barrel extension is properly indexed and torqued, with M4 feed ramps for reliable feeding. Compatible with standard AR-15 upper receivers and mid-length handguards. Includes a .750\" gas block journal. Professional installation and headspace verification recommended.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Heavy Barrel (HBAR) Profile\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 5.56 NATO \/ .223 Wylde chamber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwist Rate:\u003c\/strong\u003e 1:7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas System:\u003c\/strong\u003e Mid-Length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 4150 Chrome Moly Vanadium Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black Nitride\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Block Journal:\u003c\/strong\u003e .750\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15 Platform\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ballistic Advantage","offers":[{"title":"Default Title","offer_id":47941687017727,"sku":"BABL556017M","price":166.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/2855677.jpg?v=1766569604","url":"https:\/\/doublestackstore.com\/products\/ballistic-bbl-5-56-16-hbar-mid-1-7","provider":"Double Stack Store","version":"1.0","type":"link"}