AR15 Lower Parts Kit - Basic Custom Lower Build Kit - Nitride

SKU 201-0203-001
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Bad Attitude Department Lower Parts Kit - No FCG

Our lower parts kits are a phenomenal value.  All parts are properly made right here in the USA.  No foreign pieces.  All components are properly heat treated before plating, so they will last a life time.

Perfect for builds using aftermarket grips , fire control groups, and trigger guards or receivers with built in trigger guards.  Don't waste money on parts you'll never use.

  • Components made to the Rock Island prints
  • Properly heat treated prior to an nitride treatment
  • Selector detent and takedown pin detent properly cadmium plated
  • Takedown pin and pivot pin have added dimples on the end to aid in removal
  • Single lever selector is reversable for right side or left side installation
  • Schmid Tool ambidextrous selector available
  • All parts inspected for quality prior to packaging
  • 100% USA Made.  No imported or MIM parts

Includes:

  • Pivot Pin - Nitride
  • Takedown Pin - Nitride
  • Buffer Retainer Pin - Nitride
  • Bolt Catch Detent - Nitride
  • Selector Detent - Cadmium
  • Takedown / Pivot Pin Detent (2) - Cadmium
  • Fire Control Group Pins (2) - Nitride
  • Bolt Catch Roll Pin - Phosphate
  • Magazine Catch and Button - Phosphate / Anodize
  • AR15 Selector - Reversable - Phosphate - Schmid Tool
  • (Optional) Schmid Tool Ambidextrous Selector
  • Bolt Catch - Phosphate - Schmid Tool
  • All Required Springs

Not Included:

  • Pistol Grip & Screw
  • Fire Control Group
  • Trigger Guard

Product Reviews

Score: 5 out of 5 (based on 4 ratings)
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5/5
Quality parts
Written by Steve on 22nd Aug 2025

Quality kit, no surprises here. Used on a custom cerakote project. The nitride dimpled pivot and take down pins are perfect due to a tighter tolerance due to the paint. A punch can easily be used. All the other parts went in with ease and are high quality. The bolt catch roll pin did not deform and went in without issue. Highly recommended

5/5
Quality Components
Written by Chris on 20th May 2025

I went to a local gun shop to buy a roll pin for the bolt release. Do yourselves a favor and just buy your parts from here.

5/5
Legit Product
Written by Josh on 17th Mar 2024

Product works as intended. No issues with out of spec stuff. Will likely buy another one in the future.

5/5
Good Kit
Written by Anthony on 4th Oct 2022

Very glad this kit is nitride coated. Hopefully it will aid a bit in preventing any rust. Kit went in well. The only thing is, I wish the Bolt Catch roll pin was a coil type roll pin instead of split roll pin. Those roll pins are always a pain to get in and this roll pin was pretty solid. I had just a bit of difficulty getting it in my Zev lower. But everything else was great.