The HIPERTOUCH® EDT fire-control drop-in is a high performance, high
precision, service rifle upgrade that installs in AR-15® and AR-10®
type rifles. The HIPERTOUCH® name is short for HIgh PERformance TOUCH and EDT for Enhanced Duty Trigger with user adjustable trigger weights of 4½+ and 5½+ lbs. It’s the
“AR” fire-control upgrade we’ve all dreamed of. For installation and
operational features of the HIPERTOUCH® EDT watch the videos in the
playlist above (available soon). View this graphic, AR-15LowerCavity.PDF. HIPERTOUCH® FCGs may not work in lowers with FCG holes that are outside the MIL-Spec toleranced dimensions shown in RED.
The Genius of the HIPERTOUCH® Fire-Control
HIPERTOUCH® FCGs have uniquely solved two problems with stock AR triggers and AR trigger upgrades in general: 1) High Trigger Weight, and 2) Low Hammer Fall Energy.
Trigger Weight: The real culprit behind high trigger
pull weight is high sear impingement force that produces high friction.
To get around that, the stock “AR” trigger and hammer mechanical
advantage was changed and the sear optimized.
Hammer Fall Energy: Even with trigger weight, high energy MIL-spec hammer fall is maintained. The best of two worlds.
HIPERTOUCH® FCGs retain Eugene Stoner's design of simple elegance
while remaining very robust, without the gritty feel. Shooting for high
accuracy is no longer an almost impossible chore. It's no longer
necessary to improve the stock performance by manually polishing the
high-friction trigger and hammer sear surfaces, where the end result was
only marginally better anyway.
The EDT was designed for the broader high performance shooting market
typified by three segments that taken together, demand a unique suite
of features at more pedestrian pricing. Those segments are: Law
Enforcement, NRA type long range competition shooting, and the multi
purpose sport, hunting, and home defense rifle. All these segments have
one trigger specification in common: a minimum pull weight of 4½ lbs. The EDT meets that specification and more.
First, the triggers are user-adjustable to 4½ plus and 5½ plus lbs by
simply interchanging two hammer springs. “Plus” means that even after a
period of break-in and/or heavy use, the trigger weight will always
stay above the two thresholds.
Second, the sear design paradigm used in the 24s has been included
making for a very smooth and flat pull with only a hint of creep, a
clean break with little over travel, and a fast positive reset. If you
have put your finger on a 24E, 24C, or 243G, and can imagine the higher
EDT pull weights, you’re very close to appreciating what the EDT will
Third, the EDT sports MIL-spec hammer fall even though the pull
weights are less than MIL-spec’s 7-9 lbs. The two hammer springs that
give the 4½ and 5½ lb pull weights are even heavier than the stock
MIL-spec hammer spring. This is possible because the EDT’s hammer and
trigger mechanical advantage pioneered by HIPERFIRE in its design of the
24 product family has been included. So, the EDT hammer still strikes
well within MIL-spec’s hammer energy range with lowered trigger weight.
Fourth, the EDT lock time is faster than MIL-spec, like that of the
24 family, due to the use of the heavier springs and by locating the
center of hammer mass closer to the pivot axis, which causes it to spin
up to speed faster.
But, there’s more ... an entirely new feature found in the EDT and no where else. Remember, ED stands for Enhanced Duty.
When thinking about the needs of Law Enforcement, the Military, the
home defender, and the ultimate reliability demands placed on the AR
rifle, do you think of very adverse and dirty conditions? Now, imagine
when and how you really want that rifle to work? The EDT trigger was
designed for that scenario.
First, fine particulate debris and carbon fouling can accumulate in
the bottom of the disconnector slot of stock triggers causing the
disconnector to jam. If that should happen, semi auto function may be
compromised. In contrast, that the EDT trigger slot has holes running
the length of its bottom so that the disconnector actually becomes a
self-cleaning device, pushing out any debris by that same disconnector
Second, notice that the rear underside of the trigger has been raised
and the end ramped up and away, increasing the gap clearance between it
and the floor of the lower’s fire control cavity. What does that do?
Well, if a blown primer cup or bits of gravel should be blown into the
lower through the ejection port when shooting prone, they could end up
under the trigger preventing it from letting off completely thus
preventing hammer reset. Many, especially 3 gunners, have had this very
thing happen to them. This new EDT trigger feature can minimize this
The best feature? The EDT is only $89 at MSRP!
The Seekins AMBI Saftey works in 60 degree throw mode in SAFE and FIRE without issue.
However, in 90 degree throw mode, the trigger will rotate enough to release
the hammer. This is because the trigger tail is shorter than MIL/stock
triggers and can move up into the exposed Seekins SS slot just enough to
release the hammer when pulled causing an unsafe condition. We recommend using the Seekins safety in 60 degree mode only with the EDT trigger. More information is available here: https://www.hiperfire.com/resource/are-hipertouch-24-series-triggers-compatible-with-ambidextrous-safeties-or-other-ambi-controls/