All of the tip-of-the-spear units will get the M5.Maybe. My bet is elite units get some Spears (.277 Fury), but no way they are going to even qual rank and file with the Spear. SIG will likely get some future contract to replace the M4s with a 5.56 NATO chambering, or maybe something new, but a small frame and this Spear LT could be that.
The Spear is a large frame, and the Fury, as well as the other calibers, 6.5CM and .308 is not going to be available anytime soon. Small frame MCX, in 223/5.56, 300BO is a whole different animal, and $2500ish. Does the release of the MCX Spear LT mean the original MCX is going to be discontinued?
My guess is yes. Banking on the marketing name of the Spear, every tactical Timmy is going to need one to kit up properly. They will sell a lot, just not to folks who don't need "Spear" roll marked on their AR15. 😎😁
No. The M5 Spear replaces the M4A1 for front line combat soldiers.The Spear replaces the URGI. Crayon-eaters, rock-painters, weekend warriors, and chair force still have the M16A4 and M4A1. But when those get replaced the Spear LT is the best choice.