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Questions & Answers
Will this work on a 7.62x39 AR 15 build. Expert Answer

This will work on any standard Mil-Spec AR-15 lower receiver.

by Patrick, Gear Expert, August 27, 2021
Is this kit compatible with Radical Arms 7.62 AR Pistol? Expert Answer

The Strike Industries AR Enhanced Lower Receiver Parts with Trigger, Hammer&Disconnect will work with Mil-Spec lower receivers. If your Radical Arms AR lower is Mil-Spec it will work.

by Hunter, Gear Expert, December 9, 2022
Customer Reviews
Helpful Positive Review
Lower parts kit by Scott, Verified Owner, May 13, 2025
It’s a good parts kit, nice take down pins, the bolt release has an enlarged bottom section to make it easy to hold down when you want to hold the bolt open. The safety lever gives you the option of being single sided or ambidextrous. I was disappoin...
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1/1 found this helpful
Helpful Positive Review
I bought two of these for my boys AR .22LRs. I haven't fired the ARs yet but there's absolutely no fitment issues. Well done, Strike Industries. I like the cleaner trigger feel compared to standard LPK and my boys, well they really liked the design w...
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1/1 found this helpful
Helpful Positive Review
better.... by Long Dong Jimmy JAMZ, Verified Owner, June 19, 2025
Its better than a standard milspec kit. The trigger that is in mine breaks at a clean 5.5lbs. Looks and feel good. Decent amount of creep, but solid wall, and solid reset.
1/1 found this helpful
Helpful Positive Review
Very Nice Kit by Anthony Sylvester, September 21, 2025
This kit is very nice honestly I don't know of a better enhanced LPK. This is a huge upgrade over a standard cheap milspec LPK. The safety selector is great and gives you the option to run it standard or ambi as well as 45* or 90* option. The trigger...
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1/1 found this helpful
Helpful Positive Review
Another LPK by lol population, Verified Owner, December 18, 2017
I have a familiarity with Strike Industries products and a few of there accessories are on my rifles. However, this purchase was made solely on price and being in stock. So It's a LPK... what makes this one special? Nothing really... This product i...
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35/38 found this helpful
Helpful Positive Review
This is a decent quality lower parts kit. but one complaint I have is that the mag release button sticks out way too far. Also the ambidextrous safety lever sticks down a little far. I’m just running one side because the other hits into my hand.
2/3 found this helpful
Read All 72 Reviews
Color:
Black
Gun Make:
AR Platform
Gun Model:
AR-15
Condition:
New

Code: 3Q-LPK-ELPRW-SI-AR-E-LRPTH

MPN: SI-AR-E-LRPTH

UPC: 708747544954

List: $77.95Save $2.00
$75.95

Product Info for Strike Industries Enhanced AR-15 Complete Lower Parts Kit

Upgrade the function and quality of your weapon with these convenient Strike Industries AR Enhanced Lower Receiver Parts with Trigger, Hammer & Disconnect. This bundle of AR15 Lower Parts from Strike Industries includes their fire control group with a crisp 4.5-5.5 lbs. of pull for a smoother trigger experience. The trigger and hammer are also precision cut and phosphated for durability and resistance against corrosion and wear. This Strike Industries AR Enhanced Lower Parts Package w/ Trigger, Hammer & Disconnector also comes with an enhanced bolt catch with improved grip surfaces and angles to help you deliver your best performance in the field. You get all of the basic necessities besides a grip with this kit, but the quality of each part is anything but ordinary. Trust the Strike Industries AR Enhanced Lower Parts Kit with Trigger, Hammer and Disconnector to boost the efficiency of your firearm while lasting longer than other parts.image

WARNING: California`s Proposition 65

Specifications for Strike Industries Enhanced AR-15 Complete Lower Parts Kit:

Manufacturer: Strike Industries
Color: Black
Gun Make: AR Platform
Gun Model: AR-15
Weight: 2.9 oz
Condition: New

Features of Strike Industries AR Enhanced Lower Receiver Parts with Trigger, Hammer & Disconnect:

  • Includes all the basics that you will need to build out your AR (minus grip)
  • 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 1/2 to 8 1/2 lbs trigger pull with our fire control group

Package Contents:

  • Strike Industries AR Enhanced Lower Receiver Parts with Trigger, Hammer and Disconnector
  • Enhanced Bolt Catch - features improved grip surfaces and angles
  • Strike Magazine Catch
  • Strike Magazine Catch Button
  • Enhanced Pivot Pin - longer of the two large pins.
  • Enhanced Takedown Pin - smaller of the two large pins.
  • SI Selector Lever - 2 included in package
  • SI Selector End Plate
  • SI 60-90 3-in-1 Selector Shaft - with screws
  • Bolt Catch Spring - easily confused with the disconnector spring disconnector spring is tapered though.
  • Buffer Retainer Spring - second largest coil type spring in the kit.
  • Disconnector Spring slightly larger than bolt-catch spring identifiable because one end is a little bit wide than the other.
  • Hammer Spring - largest of all the springs.
  • Magazine Catch Spring - this is the largest coil spring in the kit.
  • Pivot Detent Spring - same as the takedown detent spring so there are two in a kit.
  • Selector Spring - similar to the takedown and pivot detent springs but larger diameter there will only be one of these.
  • Takedown Detent Spring - same as the pivot detent spring so there are two in a kit.
  • Trigger Spring - the smaller of the two largest springs.
  • Bolt Catch Plunger mushroom shaped pin
  • Bolt Catch Roll Pin - smaller of the two roll pins.
  • Hammer Pin solid pin with machined grooves can be inserted from either side.
  • Pivot Detent - same as takedown detent both sides usually rounded or semi-conical.
  • Selector Detent - one end is flat the other pointed/semi-conical.
  • Takedown Detent - same as pivot detent both sides usually rounded.
  • Trigger Pin - same as hammer pin can be inserted from either side.
  • Buffer Retainer large hollow barrel with small pin protruding from the top
  • Trigger: Investment cast trigger CNC machined heat treated phosphated precision ground
  • Hammer: Investment cast hammer CNC machined heat treated phosphated precision ground

Strike Industries Enhanced AR-15 Complete Lower Parts Kit Orderable Models

List of Orderable Models

  • Strike Industries AR Enhanced Lower Receiver Parts with Trigger, Hammer and Disconnector, SI-AR-E-LRPTH, Black, One Size, SI-AR-E-LRPTH , MPN: SI-AR-E-LRPTH , UPC: 708747544954 , Code: 3Q-LPK-ELPRW-SI-AR-E-LRPTH

Strike Industries Enhanced AR-15 Complete Lower Parts Kit Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Strike Industries AR Enhanced Lower Receiver Parts with Trigger, Hammer and Disconnector, Black, One Size, SI-AR-E-LRPTH , MPN: SI-AR-E-LRPTH-EDEMO , Code: 3Q-LPK-ELPRW-SI-AR-E-LRPTH-EDEMO-RE-C
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