As far as being able to ignite the powder consistently, all you need is SRP. For ARs SRMP is recommended for the very reasons you are already aware of. Many people ignore that, use SRP, and have never had a slam fire. A few people have had slam fires though. Some people believe that not fully seating primers can add to the problem (or even cause it) so it is not a cut and dry issue.
I encountered slam-fire problems when I first started using CCI SRP's in my AR. Switched to magnums many years back and haven't experienced it since. So at least in my case it was a cut and dry issue, YMMV.