Home » Shop » AR Parts » Mil-Spec AR15 Lower Parts Kit (w/ Hammer and Trigger)

Mil-Spec AR15 Lower Parts Kit (w/ Hammer and Trigger)

(127 customer reviews)

$39.99

92 in stock

Ships next business day

Financing available on $300+ orders

Specifications

Attributes Value
Weight 0.69 lbs
Dimensions 6 × 6 × 3 in
Platform

AR15, AR9

Caliber

.223 Wylde, .300 AAC Blackout, 5.56, 6.5 Grendel, 9mm

SKU: AR15-LPK

Description

Want an AR-15 trigger that suffers no creep, take-up, or over-travel? Looking for the easiest-to-install LPK? How about the most affordable parts kit possible? This mil-spec AR-15 LPK comes in at a great price with machining and performance that feels match-grade.

Polished for Performance

Inside this kit, you’ll find a disconnector, hammer hook, and sear that were laser-cut and polished to break as clean as glass at exactly 4.5 pounds.

The trigger affords perfect reset after every pull, with no break-in required. Every roll pin presses easily, while the hammer and trigger pins glide in with little effort.

Complete AR-15 LPK with Pistol Grip

This AR-15 Lower Parts Kit includes all components required for assembling your AR-15 stripped lower receiver:

  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring
  • Disconnector
  • Disconnect Spring
  • Steel Hammer
  • Hammer Pin
  • Hammer Spring
  • Magazine Catch
  • Magazine Catch Button
  • Magazine Catch Spring
  • Pistol Grip (A2 style)
  • Pistol Grip Lock Washer
  • Pistol Grip Screw
  • Pivot Pin
  • Pivot Pin Detent
  • Pivot Pin Detent Spring
  • Selector
  • Selector Detent
  • Selector Detent Spring
  • Takedown Pin
  • Takedown Pin Detent
  • Takedown Pin
  • Detent Spring
  • Trigger
  • Trigger Guard
  • Trigger Guard Roll Pin
  • Trigger Pin
  • Trigger Spring

Required Tools

To install all the components listed above, you’ll need a pair of roll pin punches and a gunsmithing hammer. An Armorer’s Wrench is recommended for installing the buffer assembly (sold separately, see details below).

Grab everything you need from our Gunsmithing Tools.

Easy-to-Follow Install Instructions

First time assembling, or need assistance with certain steps? Check out our in-depth instructional and picture guide. It shows the full LPK assembly with tips and tricks, including tools required and the buffer tube and castle nut install.

Buffer Assembly Sold Separately

This lower parts kit does not include a buffer tube, stock or brace, nor a buffer or recoil spring. Those components can be purchased here.

Finishing Your Custom AR-15 Build

This lower parts kit is compatible with retail-bought stripped lower receivers and fabricated AR-15 80% lowers. Learn what other parts you need to finish your AR-15 with our Beginner’s Build Guide.

 

Additional information

Weight 0.69 lbs
Dimensions 6 × 6 × 3 in
Platform

AR15, AR9

Caliber

.223 Wylde, .300 AAC Blackout, 5.56, 6.5 Grendel, 9mm

127 reviews for Mil-Spec AR15 Lower Parts Kit (w/ Hammer and Trigger)

  1. Thomas Roberts –

    LPK w/hammer and trigger

    US

    LPK was a good choice, everything worked great. Thank you.

  2. Darryl Campbell –

    Smooth

    US

    It seems like it’s going to work out well. Smooth pull not gritty

  3. David Huggins –

    Quality lower kit

    US

    Good kit. tried others but this is the best for the money!

  4. Joseph Szuch –

    Great price and quality

    US

    Exactly as it should be, no issues

  5. David Huggins –

    Lower kit

    US

    Great kit, great company.

  6. Dashalys Fuentes –

    Ar15 lower parts kit

    US

    Work perfect like it should

  7. Brad Howren –

    Spares

    US

    Bought as backup parts now that gov is getting even stupider.

  8. Adam jeran –

    Lower parts kit

    US

    Excellent value and quality. Went together smooth and shipped lightning fast.

  9. Braxton Murray –

    LPK

    US

    Great!

  10. Clayborne Moore –

    Parts/Service

    US

    I ordered 3 parts kits. Quality of the parts is excellent but 1 of the kits came with 2 rear takedown pins and no forward pin. sent email and response was quick. Will get a replacement out to you ASAP. THEN got message describe problem, take photo’s of parts and packing slip. Did that on 27th. Have heard nothing further. Some form of communication would be nice. Service?

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