AR-15 Upper Receiver Flat Top Blueprint
This download contains all dimensions needed to mill or design your own flat top upper receiver. This upper receiver will work with multi calibers such as 5.56, .223, .300Blk, and others. The upper contains the picatinny rail and forward assist!
NOTE: If you do not have a PDF reader, you can download free from get.adobe.com/reader/ PDF is great for scaling and creating large formats for the shop floor.