Lower Receiver Parts Kit with Ambi Selector

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Our lower receiver parts kit includes all the parts you need to assemble a lower receiver into a lower half except for the buttstock assembly. We only use top quality parts in our kits. This kit includes an ambidextrous safety selector.


This LPK includes:

  • A2 Pistol Grip
  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring
  • Disconnector Spring
  • Hammer Spring
  • Lock Washer
  • Magazine Catch
  • Magazine Catch Spring
  • Magazine Release Button
  • Pistol Grip Screw
  • Pivot Pin
  • 2x Pivot/Takedown detents
  • 2x Pivot/Takedown detent springs
  • Safety Detent
  • Safety Detent Spring
  • Semi-auto Disconnector
  • Semi-auto Trigger
  • Semi-auto Hammer w/ J-pin installed
  • Semi-auto safety selector (Ambidextrous)
  • Takedown pin
  • Trigger Guard (Aluminum)
  • Trigger Guard Roll Pin
  • 2x Trigger/Hammer Pins
  • Trigger Spring

SKU: STAG300270


Q: Do you have instructions or a video on how to install the kit?

A: We strongly recommend having a gunsmith install the lower parts kit to prevent damage during installation. Unfortunately we do not have instructions or a video on how to install the kit.

Q: Does Stag Arms use large pin or small pin?

A: We use the industry standard small pin. The trigger and hammer pins are .154" and the takedown and pivot pins are .250"

Q: Am I able to purchase a select fire parts kit?

A: We manufacture and sell full auto lower parts kits. They are restricted to police, government, dealers with SOT's, and owners of M16's only. For owners of M16's, please call our sales office at 860-229-9994 x1, we will need a copy of your NFA form 1 or form 4.


4 Reviews

  • 5
    Parts kit

    Posted by Tony Dodds on 18th Sep 2020

    Great product at a great price

  • 5
    Fantastic Lower parts kit from Stag Arms

    Posted by Jay on 28th Aug 2020

    All pieces fit perfect , I highly recommend these parts kits they always fit right and have never had any issues. Great product.

  • 5

    Posted by RoHo on 24th Jul 2018

    I got this kit on deal and couldn't be any happier. All the parts fit perfectly on my lower and the ambi selector is a plus! I've heard that the trigger can feel gritty due to the machining process, but this kit shows not signs of it and is smooth as butter.

    Be sure to pick up the lost parts kit too as I lost a detent while installing the front takedown pin. Luckily I was able to find it. I'm still planning on purchasing it for any other parts that fail or is lost.

    I definately recommend!

  • 5
    Gets the job done

    Posted by Richard on 20th Jun 2017

    This kit does exactly what it is supposed to do. Nothing more nothing less. I can say I am glad the ambi-selector bolt (the one that holds on the other side) does not protrude. It is flush with the selector. Others I have seen are not.