Two lever options are available. Standard and Extended Reach (about 0.09" longer than standard). Force amplification achieved from a lever means the extended reach lever is easier to reach, it's also easier to press than the standard lever. For users with small hands or shorter fingers, the extended reach lever makes the EMR-A a joy to use. For duty and defense ARs, we recommend the standard lever.
A 10.9lb rated magazine catch spring is included with each EMR-A. We've long considered the standard magazine catch spring to be rather weak (rated at 8.3lb), accidental / unintended mag drops can take place if a user slings his weapon, and has gear and pouches on the vest. A stiffer mag catch spring mitigates these risks, thus it is an integral part in the EMR-A package.
EMR-A is available as a part of bundled products (please see drop down menus for options). EMR-A's catch is made from CNC machined 4140 steel and black nitride coated, its lever is 7075 aluminum and Type 3 hard coat anodized. The roll pin has a shear strength of 800lbs.
Standard for EMR-A, Nov. 2019 and onward
The LP (low profile) mag catch shaft option reduces the mag catch shaft length by a full revolution, or 0.03. The LP option on the EMR-A (not available for serrated lever EMR-A till mid 2020) reduces the installed height of the right hand mag release button, resulting in a right side mag release button that sits below the mag release fence. This is our latest step to mitigate accidental / unintended mag drop risks.
The LP on the EMR-A will not reduce the EMR-C's installed height on an AR15/M16 to the point where EMR-C doesn't constitute accidental / unintended mag drop risks. The LP option's shorter mag catch shaft aims to reduce the installed height of a TDP spec mag release button (such as our EMR), it isn't a solution for extended mag releases, the installed height of which would require a drastically shorter shaft to offset. EMR-C is meant for 7.62mm ARs, even though it works on an AR15 / M16, we suggest it be relegated to 7.62mm ARs and gaming ARs, not for defense and duty.
* EMR-A's lever pivots on the receiver.
* EMR-A needs to be removed before installing / removing the trigger. EMR-A is installed and removed in the same manner as a factory mag catch.
* KNS Gen 2 anti-rotation trigger/hammer pins. KNS Gen2 Mod2 and Gen JJ, and Gen ST (Spikes Tactical) are compatible with EMR-A with standard lever, but not with extended lever. Gen2 Mod2's pins connecting bar may require minor fitting on thicker receivers to create adequate clearance for the EMR-A's lever when pressed.
* Battery assist device levers.