{"product_id":"colt-m4-to-m5-commando-upper-reciever-kit","title":"Colt M4 to M5 Commando Upper Reciever Kit","description":"\u003cp\u003e\u003cstrong\u003eA compact rifle is only as rigid as the upper that holds the barrel.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis kit modernizes a legacy M4 with a complete 5.56 NATO upper: chrome-lined heavy barrel, one-piece free-floating M-LOK handguard, and a continuous MIL-STD-1913 top rail.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance Under Pressure\u003c\/strong\u003e: You move through tight space with carbine-length gas and a 1:7 twist, then fold or flip the Troy BattleSights as the shot presents.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDurability and Reliability\u003c\/strong\u003e: A self-centering barrel nut and keyed barrel extension keep the 11.5-inch heavy barrel from shifting when the rail is loaded.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFriction Removal\u003c\/strong\u003e: Direct impingement, a one-piece handguard, and an ambidextrous Radian Raptor charging handle cut the fuss between pickup and first round.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIdentity Signal\u003c\/strong\u003e: Folding Troy metal sights on this black upper read as a finished conversion, not a patched carbine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProof and Credibility\u003c\/strong\u003e: Complete conversion kit with an 11.5-inch chrome-lined heavy barrel, improved barrel retention interface, Raptor charging handle, and Troy folding sights.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePut a modern upper on the lower you already run.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Colt","offers":[{"title":"Default Title","offer_id":51719576191291,"sku":"CM556-11H-CK","price":1125.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0121\/1475\/5646\/files\/1214749_1.jpg?v=1789913122","url":"https:\/\/greatcallathletics.com\/products\/colt-m4-to-m5-commando-upper-reciever-kit","provider":"Great Call Athletics","version":"1.0","type":"link"}