Many people prefer 1.93 or 2.26 simply because it keeps the head in a more upright position when shooting. For instance, if you are running a gas mask or are shooting passively under night vision, you might want your optic to sit at 1.93 or 2.26.
There are a few reasons you might want to go with a taller optic (1.93 or taller). This rifle is using a Trijicon SRO on a low-profile RMR mount attached to the dust cover. Some platforms will necessitate even lower mounts than absolute, such as the 9mm AK platform below. The same is true for other platforms such as the MCX, HK416/417, and others. Because the stock sits lower on this SCAR, it is natural that optics will feel like they sit higher. There are, however, some situations where an absolute height optic might be a better option for you (i.e., MP5, SCAR, HK416, AK Variants). If your stock sits lower in relation to the receiver (like this SCAR), it may be more advantageous to go with an "Absolute" height optic/mount, like the T-2 + Scalarworks Leap combo on a SCAR-16 pictured below. The reason being, absolute height often requires more hunching over. Generally speaking, we recommend lower 1/3rd over absolute height. For instance, the EOTECH EXPS (Lower 1/3rd) and XPS (Absolute) models (which have mounts integrated into them). These two heights are standardized amongst most optics on the market.
(Left to Right) Aimpoint T-2 on an Absolute co-witness (1.42"), lower third (1.57"), and 1.93 Scalarworks LEAP mounts.įor the most part, the two most "common" optic heights will be Absolute and Lower 1/3rd. What platform are you using? What optic are you considering? Where does your receiver sit in relation to your stock? How much cheek do you want on the stock? Do you want more of an "upright" shooting position? How long is your neck? There are many variables when it comes to making this decision.