{"product_id":"spikes-tactical-forged-m4-flat-top-upper-receiver-multi-caliber-w-forward-assist-port-door-sft50m4","title":"Spike's Tactical Forged M4 Flat Top Upper Receiver Multi-Caliber w\/ Forward Assist \u0026 Port Door SFT50M4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe Spike's Tactical M4 forged flat top upper receiver is built to Mil-Spec standards for dependable AR-style performance across multi-caliber setups. Machined from a 7075-T6 aluminum forging and finished with a durable Type III hardcoat anodizing, this upper is designed for strength, wear resistance, and long service life. It comes ready for your build with the forward assist and ejection port door assembly pre-installed, making it a solid choice for shooters who want factory-build quality in a standalone upper receiver.\u003c\/p\u003e\n\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMil-Spec forged 7075-T6 aluminum construction for strength and reliability\u003c\/li\u003e\n  \u003cli\u003eType III hardcoat anodized black finish for enhanced corrosion and wear resistance\u003c\/li\u003e\n  \u003cli\u003eForward assist and ejection port door cover pre-installed for easier assembly\u003c\/li\u003e\n  \u003cli\u003eM4 feed ramps and flat top (A3-style) configuration for versatile AR-style builds\u003c\/li\u003e\n  \u003cli\u003eLaser-engraved T-markings for consistent accessory and optic placement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Spike's Tactical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e SFT50M4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 855713006005\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePlatform Fit:\u003c\/strong\u003e AR-15 \/ M4-style\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Forged flat top (A3-style) upper receiver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075-T6 Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Color:\u003c\/strong\u003e Black, Type III hardcoat anodized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeed Ramps:\u003c\/strong\u003e M4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eT-Marks:\u003c\/strong\u003e Yes (laser engraved)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Forward assist; ejection port door assembly (cover, spring, rod)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 8.50 oz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eDisclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product’s manufacturer.\u003c\/em\u003e\u003c\/p\u003e","brand":"Spike's Tactical","offers":[{"title":"Default Title","offer_id":44077282197626,"sku":"FLX-SPKSFT50M4","price":119.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1679\/0365\/files\/283690734.jpg?v=1767659045","url":"https:\/\/tlooutdoors.com\/products\/spikes-tactical-forged-m4-flat-top-upper-receiver-multi-caliber-w-forward-assist-port-door-sft50m4","provider":"TLO Outdoors","version":"1.0","type":"link"}