This Bear Creek Arsenal AR-15 16" M4 stainless steel .350 Legend barrel has a carbine length gas system with a 1:16 twist. Our .350 Legend stainless steel rifle barrels are made from the finest 416R Stainless Steel and precisely rifled for high accuracy at a great price. Use a Bear Creek Arsenal ar barrel in your AR15 next build and experience superior performance back by a lifetime warranty! All finished barrels go through a 100% inspection process. Inspections Equipment includes CMMs and Air Gauges for the bores as well as visual and machine inspection. Shop more .350 Legend Barrels! Disclaimer: BCA 350 Legend is susceptible to jamming on lowers not manufactured by BCA and certain ammo and magazines {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}} Does not include gas block or gas tube