I like what you did, especially with the rear sight.
May I recommend ditching the OEM stock and getting a Houge overmoulded.
With the Houge stock you can also take off the buttplate and replace it with the trapdoor buttplate assembly from an AR-15. Since the Houge buttstock is hollow, it gives you a rear stock storage compartment much like an M-16 but with a bit more storage like a Cavalry Arms AR-15 stock.
May I recommend ditching the OEM stock and getting a Houge overmoulded.
With the Houge stock you can also take off the buttplate and replace it with the trapdoor buttplate assembly from an AR-15. Since the Houge buttstock is hollow, it gives you a rear stock storage compartment much like an M-16 but with a bit more storage like a Cavalry Arms AR-15 stock.