Optical placement for assault rifles?

 🇬🇧 Following redundant questions on the placement of the optics and the fact that the arrival of the 416 in our army is already engaged, here is our point of view on the placement of the optics in the "extreme front" position :

> The 416 is a "floating" barrel firearm, which means that the barrel is attached to the frame and not to the handguard rail. In other words, if the rail unscrews a little, if I hold it more or less firmly depending on the standing, kneeling or lying positions, my point of impact (POI) will be modified for the same point of aim (POA ). Indeed, a movement of 0.5mm of the barrel (or of the end of the rail) for a 10.5" barrel leads to a variation of almost 18cm at 100m! One of the key points of an adjustment is that the main optic must be attached to the barrel (and therefore to the upper for an AR15 type platform like the HK416) and which will not be influenced by adapted positions, support on the handguard, bipod...

> If we consider the placement at the front end, this affects optimal handling and the placement of accessories (lamp, laser designator, etc.)

> A simple optical principle means that the field of vision will be limited by optics placed farther from your eye (We address this in our modules, even if the optics are transparent, the presence of edges means that our fine analysis fact that on the cone starting from our eye and passing through the optics, so closer = larger field)

> An optic in this place limits the effectiveness of the use of magnifying (The magnification must be at the back for "eye relief", and therefore a distance between the optic and the x3 drastically restricts the field of vision )

> Finally, "red dot sights" use the refraction or reflection of an LED or laser light to produce a collimated image of a reticle on glass within a frame and such extreme placement will tolerate much less the placements of the eye different from those of the setting. So in a tactical context, as soon as my weapon has an angle, if I lay it on a hood, if I place it on the side to shoot under a door or a VHL, the further the optics are, the more I will have difficulty finding the reticle, lacking a spatio-kinesthetic marker allowing me to align my aim (the cheek on the butt etc.)

🇺🇸 Following redundant questions about optics placement and the fact that the arrival of the HK416 in French army is already engaged, here is our point of view about "extreme forward" mount:

> HK416 uses "floating" barrel, which means that the barrel is attached to the upper and not to the handguard. If the rail unscrews a little, if I hold it more or less firmly depending of the stance, kneeling or prone positions, my point of impact (POI) will be modified for the same point of aim (POA ). Indeed, a 0.5mm barrel movement (or of the end of the rail) for a 10.5 "barrel causes a variation of nearly 18cm at 100m! One of the key points of an adjustment is that the main optic must be merged with the barrel ( and therefore with the upper for an AR15 type platform like the HK416) and which will not be influenced by adaptive positions, handguard support , bipod use…

> If we consider the placement at the front end, this can disturb optimal handling and the accessories placement (lamp, laser designator, etc.)

> A simple optical principle means that the field of vision will be limited by an optic placed farther from your eye (We approach it in our modules, even if the optics are transparent, the presence of the edges means that our fine analysis is made on the cone starting from our eye and passing through the optics, therefore closer = larger field)

> An optic in this place limits the effectiveness of the magnifier use (The magnifier must be at the back for "eye relief", and therefore a distance between the optic and the x3 drastically flanges the field of vision)

> Finally, the "red dot sights" use refraction or reflection of an LED or laser light to produce a collimated image of a reticle on a glass, pane inside a frame and such extreme placement will tolerate significantly less eye placements different from those of the zeroing. So in a tactical context, as soon as my gun has an angle, if I lay it on a hood, if I place it on the side to shoot under a door or a VHL, the more the optics will be far, the more I will have difficulties finding the reticle, lacking a space-kinetic reference allowing me to align my aim (tcheek on the butt, etc.)