Please email us at techsales@opticsplanet.com regarding the issue you are having with the RISE Armament ICONIC Independent Two-Stage Trigger.
This trigger will also work with 45 degree safety selectors. Feel free to also check out the RISE Ambi Safety Selector, Part number RA-6423-BLK
The springs at the rear are tensioning springs to secure the trigger in the trigger pocket. Drop in triggers do not utilize the hammer spring legs to hold the trigger pins in place so anti walk pins are used and the springs put upward tension to take out any play.
.153/.154 pin hole size
The RISE Armament ICONIC Independent Two-Stage Trigger is not compatible with the MCX Canebrake. I would recommend the Triggertech SIG Sauer Adaptable Trigger, found by using the link below:
https://www.opticsplanet.com/triggertech-sig-sauer-mcx-adaptable-trigger.html
The RISE Armament ICONIC Independent Two-Stage Trigger can be used in an AR10 as long as the particular AR10 uses Mil-Spec triggers.
Benny, feel free to reach out to us if you have questions. Help@risearmament.com