{"product_id":"sturm-ruger-amp-co-ruger-ar-556-mpr-450-bushmaster-18-bbl-5rd","title":"Ruger AR-556 MPR .450 Bushmaster 5rd Magazine 18\" Barrel Black","description":"\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003cul\u003e\t\u003cli\u003eLower receiver is fitted with Magpul� MOE� grip and MOE SL? collapsible buttstock on the Mil-Spec buffer tube.\u003c\/li\u003e\t\u003cli\u003eHandguard is free-floating for accuracy and the slim 15\" length provides enhanced ergonomics and support.\u003c\/li\u003e\t\u003cli\u003eFlattop upper receiver includes an enlarged window for easy ejection as well as forward assist dust cover and brass deflector. CNC-machined from Mil-Spec forging and Type III hard coat anodized for maximum durability.\u003c\/li\u003e\t\u003cli\u003eBolt is machined from high-strength superalloy more than 50% stronger than traditional MSR bolt materials and engineered with tapered lugs to support the large case head of .450 Bushmaster ammunition.\u003c\/li\u003e\t\u003cli\u003eThe Ruger� Elite 452? AR-Trigger is a two-stage trigger that offers a smooth crisp 4.5 pound trigger pull. It features a full-strength hammer spring for consistent primer ignition and a lightweight hammer that enables a 30% faster lock time over standard MSR triggers.\u003c\/li\u003e\t\u003cli\u003eCarbine-length gas system provides the most reliable function with .450 Bushmaster ammunition.\u003c\/li\u003e\t\u003cli\u003eMagpul� M-LOK� accessory attachment slots along the 3:00 6:00 and 9:00 positions with additional slots on the angled faces near the muzzle.\u003c\/li\u003e\t\u003cli\u003eCold hammer-forged 4140 chrome-moly steel barrel with ultra-precise 5R rifling and black nitrided finish provides exceptional accuracy longevity and easy cleaning. The 1:16\" twist rate maximizes accuracy with bullets ranging from 170 to 260 grains.\u003c\/li\u003e\t\u003cli\u003eChrome-plated bolt carrier inside diameter and chrome-plated gas key inside diameter provide exceptional resistance to hot gases. The gas key is staked so that it will not loosen after extensive firing.\u003c\/li\u003e\t\u003cli\u003eRuger� muzzle brake is a radial port design that significantly reduces felt recoil and muzzle movement. The 11\/16\"-24 threaded barrel allows for standard muzzle accessories to be installed.\u003c\/li\u003e\t\u003cli\u003eAlso includes: One 5-round metal box magazine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\t\u003cli\u003e\n\u003cstrong\u003eCaliber:\u003c\/strong\u003e 450 BUSHMASTER\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eStock:\u003c\/strong\u003e Black Synthetic Collapsible\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eHandguard:\u003c\/strong\u003e Free-Float M-LOK�\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eSights:\u003c\/strong\u003e None\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 18.63\"\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eThread Pattern:\u003c\/strong\u003e 11\/16\"-24\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eTwist:\u003c\/strong\u003e 1:16\" RH\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Type III Hard Coat Anodized\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 7.30\"\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 7.4 lb.\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 35.60\" - 38.90\"\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eLength of Pull:\u003c\/strong\u003e 11.10\" - 14.40\"\u003c\/li\u003e\t\u003cli\u003e\n\u003cstrong\u003eGrooves:\u003c\/strong\u003e 5\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003eRifles\u003cbr\u003e08522","brand":"Sturm Ruger \u0026 Co","offers":[{"title":"Retail","offer_id":45131301650569,"sku":"UR8522","price":1243.55,"currency_code":"USD","in_stock":false},{"title":"Member","offer_id":45131302764681,"sku":"UR8522","price":953.7,"currency_code":"USD","in_stock":false},{"title":"Premium Member","offer_id":45131302797449,"sku":"UR8522","price":910.35,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/2813\/4793\/files\/UR8522.jpg?v=1767635832","url":"https:\/\/christianvigilant.com\/products\/sturm-ruger-amp-co-ruger-ar-556-mpr-450-bushmaster-18-bbl-5rd","provider":"Christian Vigilant","version":"1.0","type":"link"}