A5 on its own with SBA3 or 4 keeps the LOP under 13 1/2. If you are using a Law folding adapter with either RE you need to use the limiters linked above or fill in a hole with epoxy etc.
Also A5 requires a rifle length spring such as a Sprinco Green as well as the longer A5 buffer.
Also A5 requires a rifle length spring such as a Sprinco Green as well as the longer A5 buffer.

