概要

The Enhanced Lower parts kit offers a convenient upgrade package for the AR15 for those looking for a complete Strike Industries solution for new builds, or to update their plain jane AR.  This kit includes all the basics that you will need to build out your AR (minus grip), but with Strike Industries Enhanced lower parts where applicable.

This complete kit includes our fire control group which offers a crisp 5.5-8.5 lb pull, with unmatched smoothness for mil-spec style AR15 triggers.  Longitudinally ground and polished sear engagement surfaces coupled with precision cut sear angle equate a vastly improved trigger feel without sacrificing safety or reliability.

COMPATIBILITY: AR-15: Mil-Spec lower receivers
NOT COMPATIBLE: AR-10: Bolt Catch, Bolt Catch Roll Pin, Pivot Pin and Takedown Pin are not compatible with AR-10 lower receivers.

DISCLAIMER: Due to the compact design of the PDW Stock and PDW Stabilizer, the SI Extended, Shift & Ultra Light Pivot / Takedown Pins, as well as other possible extended pin sets on the market, will bind or not clear the slide rods.

 - easily confused with the disconnector spring; disconnector spring is tapered though.
 - second largest coil type spring in the kit.
 ? slightly larger than bolt-catch spring, identifiable because one end is a little bit wide than the other.
 - largest of all the springs. 
 - this is the largest coil spring in the kit.
 - same as the takedown detent spring, so there are two in a kit.
 - similar to the takedown and pivot detent springs, but larger diameter; there will only be one of these.
 - same as the pivot detent spring, so there are two in a kit.
 - the smaller of the two largest springs.
 ? mushroom shaped pin
 - smaller of the two roll pins.
 ? solid pin with machined grooves; can be inserted from either side.
 - same as takedown detent; both sides usually rounded or semi-conical.
 - one end is flat, the other pointed/semi-conical.
 - same as pivot detent; both sides usually rounded.
 - same as hammer pin; can be inserted from either side.
 ? large hollow barrel with small pin protruding from the top
 Investment cast trigger, CNC machined, heat treated, phosphated, precision ground
-Investment cast hammer, CNC machined, heat treated, phosphated, precision ground

- Includes SI's signature Enhanced Lower Parts (AR-EBC, New improved SI-SMC, AR-EPTP, & AR-HS-60/90-3in1) 
- SI's Trigger Springs provide a consistent 5.5 ? to 8 ? lbs trigger pull with our fire control groupCOMPATIBILITY: AR-15: Mil-Spec lower receivers
NOT COMPATIBLE: AR-10: Bolt Catch, Bolt Catch Roll Pin, Pivot Pin and Takedown Pin are not compatible with AR-10 lower receivers.DISCLAIMER: Due to the compact design of the PDW Stock and PDW Stabilizer, the SI Extended, Shift & Ultra Light Pivot / Takedown Pins, as well as other possible extended pin sets on the market, will bind or not clear the slide rods.-CALIFORNIA PROPOSITION 65 WARNING:-
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov