OPAR 3.5 – Curved

Patent No. 11274894

The OPAR 3.5 Trigger-Curved is a complete assembly pre-stage drop-in trigger built with a purpose to provide improved trigger pull weight, reset, clean feel, precision, and safety for the day-to-day users, military and law enforcement members and agencies. The form of the trigger enhances precision capabilities through its Area-of-Engagement design. This is accomplished by assisting the shooter build muscle memory for their trigger finger placement in a simple and natural way. 

It has a clean 3.25 to 3.75lbs. trigger pull weight with a short trigger reset. The OPAR 3.5 patented design of pre-stage trigger mechanism has an inset secondary trigger providing an additional safety mechanism to reduce the chances of an accidental discharge. The OPAR 3.5 is compatible with AR-15 and HK416 rifles using the Mil-Spec 0.154-inch pins. 

Stats – Specifications 

  • Free pre-stage pull weight: 1.0 to 1.5 lbs. 
  • Trigger pull weight: 3.25 to 3.75lbs. 
  • Over travel: 0.030 inches 
  • Trigger-shoe style: Curved 
  • Area-of-Engagement: 100° 
  • Single Stage 
  • Trigger options: Operator-Curved and Operator-Straight 
  • Currently Available in One Color Option. (Black-Midnight Bronze)
  • Untested in: MCX & AR-10 Platforms (in the works)


SKU 02-00054-00 Category

In stock

Additional information

Weight .3 lbs
Dimensions 3.5 × 3.5 × 1.75 in
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