• Complete 31-piece kit
  • Machined parts, no MIM.
  • Hammer 8620 Steel
  • Trigger 8620 Steel
  • Disconnector 4340 Steel
  • Trigger Pin 4140 Steel
  • Bolt Catch 4340 Steel


  • 1x Takedown Pin
  • 1x Pivot Pin
  • 2x Takedown Pin Detent
  • 2x Takedown Pin Detent Spring
  • 1x Bolt Catch
  • 1x Bolt Catch Plunger
  • 1x Bolt Catch Spring Pin
  • 1x Bolt Catch Spring
  • 1x Buffer Retainer
  • 1x Buffer Retainer Spring
  • 1x Trigger
  • 1x Hammer
  • 1x Disconnetor
  • 1x Hammer Pin
  • 1x Trigger Pin
  • 1x Hammer Spring
  • 1x Trigger Spring
  • 1x Disconnetor Spring
  • 1x Magazine Catch
  • 1x Magazine Catch Spring
  • 1x Magazine Release Button
  • 1x Safety Selector
  • 1x Selector Detent
  • 1x Selector Detent Spring
  • 1x A2 Pistol Grip
  • 1x Pistol Grip Screw and Washer
  • 1x Trigger Guard and Roll Pin


  • Fits all Mil-Spec AR-15 lower receivers.


When you need a quality lower receiver parts kit for your next AR build the Odin Works Mil-Spec AR-15 Lower Parts Kit is a choice that will easily stand out above the rest. This is a full 31 piece set that includes everything you need to complete a mil-spec type lower receiver from a quality polymer pistol grip to the detent pins. You won’t find inferior injection molded metal parts in this group. Every part is a quality machined component that won’t let you down.

When you chose the Odin Works Mil-Spec AR-15 Lower Parts Kit you’ll receive a group of quality parts that will work together flawlessly to complete your AR-15 system. You don’t have to worry about ordering individual parts to find out that you’ve missed something or that your parts don’t marry well. Everything in this lower receiver parts kit is intended to work together for a smooth working build.

Each part in the Odin Works Mil-Spec Lower Parts Kit is made of the correct material for the best function and longest life possible. The hammer and trigger are machined from 8620 steel, while the disconnector and bolt catch are 4340 steel and the trigger pin is made with 4140 steel. Everything will have the correct balance between strength and flexibility to do its job as it should, you don’t have to go through a laundry list of individual pieces hoping to choose the best among them. Odin Works has already done the work for you. Use this quality lower parts kit and get from the bench to the range faster without having to go back to adjust fit or replace parts that aren’t working together.

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