Yes, The whole kit can work with both.
To be specific, are the 2 Firing Pin Retaining pins for the AR-15, or AR-10 ? as they are NOT interchangeable, what is included? one for each or 2 AR-15 pins as pictured? The product description just says 2 pins. All parts listed are generic and will fit either, except for those retaining pins,those are specific to type. There needs to be a clear description of those parts.