The AK Trigger Ultimate with Lightning Bow (AKT-UL) is a single stage
trigger is designed for the AK47 and AK74 variant platforms.
The ALG Defense AK series of triggers were designed to work with most
AK variants without fitting. With AK variants that have a rivet for the
rear of the trigger guard, commonly acting as an anti-slap feature,
this rivet should be no greater than 0.062 inches tall. Our AK series of
triggers are designed to work with rivets that are 0.062 inches in
height or less. If this rivet is higher than 0.062 inches, the rivet
will have to be shaved down to allow for more clearance. Having improper
clearance can result in damage to the disconnector itself.
Alternatively, if the user does not choose to modify the rivet, you
can opt to modify the underside of the disconnector to increase the
clearance between the bottom of the disconnector and the rivet in the
receiver. It is not recommended to completely remove the tail of the
disconnector as adverse issues may arise, such as trigger slap. Most
users prefer to bevel (angle) the disconnector in the area that would
contact the rivet. We recommend shaving down the rivet, not the
disconnector tail.
Please note, we do recommend having a qualified gunsmith install and
perform all fitting of fire control groups. AK receivers and parts
coming from a wide origin of manufacture vary, there is no agreed upon
set specifications. As such, fitting may be required. Please note the
rivet and/or disconnect will need the proper clearance as per the chart
below, failure to have the correct clearance will cause damage.“