ID: 83950 (Parts-SI-AR-E-LRPTH)
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Non-Export ItemShips Inside USA Only
- Includes SI's signature Enhanced Lower Parts (AR-EBC, AR-EMC, AR-EPTP, & AR-HS-60/90-3in1)
- SI's Trigger Springs provide a consistent 4 ½ to 5 ½ lbs trigger pull with our fire control group
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 4.5-5.5 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.Kit Includes:SI ENHANCED LOWER PARTS:Enhanced Bolt Catch - features improved grip surfaces and anglesEnhanced Magazine CatchEnhanced Magazine Catch Button - features improved grip surfaceEnhanced Pivot Pin - longer of the two large pinsEnhanced Takedown Pin - smaller of the two large pinsSI Selector Lever - 2 included in packageSI Selector End PlateSI 60-90 3-in-1 Selector Shaft - with screwsSPRINGS:Bolt Catch Spring - easily confused with the disconnector spring; disconnector spring is tapered thoughBuffer Retainer Spring - second largest coil type spring in the kitDisconnector Spring – slightly larger than bolt-catch spring, identifiable because one end is a little bit wide than the otherHammer Spring - largest of all the springsMagazine Catch Spring - this is the largest coil spring in the kitPivot Detent Spring - same as the takedown detent spring, so there are two in a kitSelector Spring - similar to the takedown and pivot detent springs, but larger diameter; there will only be one of theseTakedown Detent Spring - same as the pivot detent spring, so there are two in a kitTrigger Spring - the smaller of the two largest springsPINS:Bolt Catch Plunger – mushroom shaped pinBolt Catch Roll Pin - smaller of the two roll pinsHammer Pin – solid pin with machined grooves; can be inserted from either sidePivot Detent - same as takedown detent; both sides usually rounded or semi-conicalSelector Detent - one end is flat, the other pointed/semi-conicalTakedown Detent - same as pivot detent; both sides usually roundedTrigger Pin - same as hammer pin; can be inserted from either sideBuffer Retainer – large hollow barrel with small pin protruding from the topFIRE CONTROL GROUP:Trigger: – Investment cast trigger, CNC machined, heat treated, phosphated, precision groundHammer: – Investment cast hammer, CNC machined, heat treated, phosphated, precision groundCompatibility:
Most AR15 lowersMaterial:
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