****ATTN: THIS HAS A RADIAN RAMJET and ALIGN THUMBREST**** ****ATTN: THIS HAS A RADIAN RAMJET and ALIGN THUMBREST**** ****ATTN: THIS HAS A RADIAN RAMJET and ALIGN THUMBREST**** ****ATTN: THIS HAS A RADIAN RAMJET and ALIGN THUMBREST**** ****IMPORTANT**** ****ATTN: The M1913-4 rail key is installed with the crossbar seated in the center (middle of the three) Picatinny rail slots on the P365 X-Macro (3.7" non-comp frame with Radian Ramjet Afterburner)****