Colt Sp63528 Upper, Product Description Colt's Manufacturing Upper, 223rem/556nato, Black Finish, Dust Cover, Forward Assist, M4 Feed Ramps Sp63528 Product Type: Upper Check out COLT AR15A4 Upper Rcvr Assembly, Carbine SKU: 160302053 with 43 reviews and an overall rating of 4. New in box, Mil-spec quality straight from Colt! This is a new part direct Availability: In Stock. The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. Upper rail is T numbered. M4 Feed Ramps Forward Assist Colt M4 Upper Receiver SP63528, CAGE Code marked, post-2018 Just The AR platform 716 subscribers Subscribe Colt M4 Upper Receiver Cage Code NEW Genuine Colt M4 upper receiver. Now is your chance to get that clone correct upper for your build! The Colt® M4 Upp Colt Manufacturing AR-15/M4 Upper Receiver Assembly (SP63528) Colt Manufacturing AR-15/M4 Upper Receiver Assembly (SP63528) Forged flat top Colt's Manufacturing, Upper, 223REM/556NATO, Black Finish, Dust Cover, Forward Assist, M4 Feed Ramps The durability, reliability and excellent build The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. Welcome to r/AR15! Share you builds, ask relevant questions, play nice etc. Crafted from forged aluminum, this upper Buy COLT M4 UPPER BLK SP63528: GunBroker is the largest seller of Other AR15 Accessories & Parts AR15 Parts Gun Parts All: 1080712010 The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. This upper receiver is designed COLT M4 ASSEMBLED UPPER RECEIVER P/N SP63528 If anything ever goes wrong with any gun you buy with the Tombstone Tactical Supplemental Limited Lifetime Replacement Warranty, it will be Product Details Colt's Manufacturing Part Number SP63528. Brand new and sealed. It arrived in bag indicating it was Colt, the T-marks look right to me, looks like a Colt's Manufacturing Upper, 223REM/556NATO, Black Finish, Dust Cover, Forward Assist, M4 Feed Ramps SP63528-Accessories:Dust Cover, Forward Assist, M4 AR Uppers Small AR Parts Other AR Accessories & Parts Glock Parts All Glock Parts Glock Barrels Glock Frames Glock Grips Glock Magazines & Glock Clips Glock Parts Kits Glock Slides Glock COLT M4 UPPER BLK and more at Detroit Ammunition Company! Order now! Sold by RSR Group The receiver has the 4 distinct Colt markings: Cage Code 13629 Square Forge Marking "M4" Above Gas Hole Pronounced T-Marks These uppers are currently Colt SP63528 stripped upper availability? - AR15. Forward assist and dust cover included. Like new condition with 1980s Buy COLT M4 UPPER BLACK 223REM 556NATO SP63528 CAGE CODE 13629 (NIB): GunBroker is the largest seller of AR15 Uppers AR15 Parts Gun Parts All: 1030338758 The durability, reliability and excellent build quality of Colt uppers will provide years of service you can count on. Colt OEM M4 AR15 Upper Receiver. MPN: SP63528 | UPC: Factory Colt upper receiver assembly to build your AR15, M16 or M4. Upper Description Colt Manufacturing AR-15/M4 Upper Receiver Assembly (SP63528) Forged flat top upper receiver assembly includes forward assist, ejection port dust cover Upper rail is T numbered. Has dry film lubricant on the inside. 56. Includes AR Uppers Small AR Parts Other AR Accessories & Parts Glock Parts All Glock Parts Glock Barrels Glock Frames Glock Grips Glock Magazines & Glock Clips Colt flattop upper receiver with M4 feedramps, current 2021 to present production. These are guaranteed to have Colt’s CAGE code 13629 marked above the Colt OEM M4 AR15 Upper Receiver. The upper I had forgotten that I had placed myself on the waiting list for this Colt upper many months before, and was pleasantly surprised to receive the notification. 99 (You save) (No reviews yet) Write a Review Rating Current Stock: Out of stock Out of Stock Add to Wish List Colt Forged M4 Upper Receiver Assembly | This upper is built to the correct military specifications, forged from 7075-T6, machined and coated in dry film lube. 95 Out of Stock Notify Me SKU: SP63528 MODEL/DESC: Colt M4 Upper Receiver Out of Stock Description Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. This upper receiver is designed to be a perfect fit for your M4 rifle, delivering exceptional performance and precision. The upper is forged 7075-T6 Aluminum and features M4 feed ramps and a type III hard anodized finish. Description Colt Manufacturing AR-15/M4 Upper Receiver Assembly (SP63528) Forged flat top upper receiver assembly includes forward assist, ejection port dust cover Upper rail is T numbered. Crafted with utmost attention to detail and quality, it is made using high-grade The Colt M4 stripped upper receiver is everything you would expect from a Mil-Spec part. Colt M4 Upper Receiver SP63528, CAGE Code marked, post-2018.