Ambi mag release and other parts.

[Diamondback]

I'm a lefty as well, which has me wondering, what do you need a BAD lever for?

I've never seen a lefty with a BAD.

*waves hand* Soon to be *ex*-"lefty w/BAD" though, it's been just ballast and I've been finding as a Stubfinger Southpaw it works better for me to just work the "front half" with my right hand, giving the bolt catch a reach-around. Could see it being some use for a right-hander, particularly one with longer fingers, but as it is my AR weighs ten pounds and the BAD is the first thing coming off to put it on a diet.

[Duffy]

Shown to the public for the first time at Cola Warrior West III, the EMR-A prototype with a modified standard lever.

NOTE: this is a prototype lever, converted to EMR-A's standard lever length from an extended lever, production standard lever will be slightly different and look better.

Photo courtesy of Daniel R of Cola Warrior.


Two lever options will be available: standard, and extended (0.09 longer). The extended lever will be easier to press due to its slightly longer length.

EMR-A will ship with a 60% extra spring rate mag catch spring. We played with 30% an 40% extra power springs, and came to the conclusion the standard mag catch spring is rather weak to begin with, 30% and 40% doesn't amount to much.

The 60% extra spring rate spring mitigates accidental / unintended mag drops, whether our EMR-A is installed and in use or not. The extra power mag catch spring will be an optional add-on item for EMR and EMR-C. Since EMR and EMR-C both have free shipping already included, the spring (if selected) ships with them for free as well.

As to making the springs available separately, I'm all for it, except it's not practical to list an item for $1 and spend $2.50 to ship it, so more likely the springs will come in a 5 pack.

[Duffy]

Here's a better pic of the EMR-A with the modified lever. Remember this lever was modified from the extended lever, the ratio between the V shaped serrations and straight serrations is jacked, production lever is 80% V shaped, 20% straight.

Photo courtesy of Daniel R of Cola Warrior.


Another piece of info: the roll pin is rated for 475lbs of shear strength. The EMR-A is modular, in that the lever can be removed to install a different lever by the user if desired.

Due care should be exercised though, I used my Leatherman multitool to hold the lever while grinding off 0.08" of length from the longer lever, and the teeth of the pliers made their marks on the raw 7075 aluminum lever. Production levers will be hard coat anodized and stronger.

[Duffy]

This was posted in reply to the trigger pin clearance.

I've seen LWRC's ambi mag catch, it has a hole for the trigger pin. It isn't difficult to remove the EMR-A, the procedure is the same as removing any bolt catch, 8 counter clockwise turns and out comes the mag catch.

From the beginning, the design called for distancing the EMR-A's paddle from the bolt catch's lower paddle. For the EMR-A's paddle to not interfere with the trigger pin, it'd need to be located closer to, and below the bolt catch's lower paddle, the close proximity of these two control surfaces is precisely a flaw the design wants to avoid.

We wanted the EMR-A's paddle to closely mirror the location of the mag release button on the right side. But an exact mirror location would put the EMR-A's lever below the bolt catch's lower paddle, something we don't want. The solution we reached was to leave the area immediately below the bolt catch lower paddle clean and low profile, and serrate the paddle outside of it.

The paddle has a shallow V shape for 80% of the serrated length, the remaining 20% is straight. The shallow V shaped serrations conform to the finger's curvature, the straight portion provides a natural index, and additional purchase as pressure is applied to the paddle and the finger has a tendency to pull back a bit while it's curled.

The extended lever can illustrate this well. The previous pics show a shorter lever converted from this extended lever.

[drtywk]

Roger, is there any chance you will be offering the EMR-A with a dimpled paddle?

[Duffy]

Dimpled surface area can be incorporated into everything else we make, but we don't do it just for looks, it has to serve a purpose, and be an improvement. Matching the dimpled ABC/R-AA would be nice, but it can't be the only reason, we don't do fashion/lifestyle/trendy stuff that's just different but not better.

We will do so with the EMR-A's paddle only if the dimples can work as well as they do on the ABC/R-AA. We worked on those bolt catch dimples quite a bit to find a pattern that makes sense and offers good purchase from all angles (hence the AA moniker). I'm not sure how they'll work with the 80% V shaped, and 20% straight surface area of the paddle.

[JulyAZ]

Any planned release date? I'm in need of a new ambi release and really wanna try this one.

[Duffy]

Mid to late May. Black nitride coating is taking longer than expected.

Dimpled paddle design is complete, it'll be available in the next run. The EMR-A paddle is removable on the user level, we thought about offering the paddle separately but will decide that when we have the dimpled (in standard length) levers ready.



Those that have felt the levers have expressed the multi-faceted lever (the serrated length is divided into 80% shallow V shape, and 20% straight) feels very good, and works as designed to provide a natural index and more traction than a flat surface

[drtywk]

Those look great Roger. Can't wait to put them on my rifles.

[Duffy]

Top: standard lever. Bottom: extended lever. The pic's perspective makes the EMR-A with extended lever larger, the extended reach lever is 0.09" longer, but not taller.

Availability: May 19.