Hello i just purchased a bushmaster m4a1 with the one peice carry handle/upper receiver. What do i need to mount optics on the handle? What are my choices for optics? Id like to be able to use the iron sites and or also a scope with out interference. My other question is since i do not have a flat top upper receiver what is my best option for an aftermarket butt stock that has an adjustible cheek rest on it? Do you know of company names and pricing?
Thanks
Thanks