Are you new to the AR rifle? Seems you may be and if so, I'd suggest you familiarize yourself on the TOTAL operation of the AR design, before you start dropping $$$ on all the toy accessories. Just because many say get it, it's a must have, doesn't mean it fits your exact means for HD. My AR is the plain jane version. It's not for HD, but I added a Magpul+ grip and a BCM charging handle for a proper fit and a solid pullback charge. It's accurate, functions well and suits MY needs. Never forget, when the SHTF at 2 am, you better be able to operate your HD weapon in the dark and half asleep. No room for error(s).
No one reads or cares what is written in ones signature box. So I'm not writing anything worth reading or remembering.