TX Arms AR15 Lower Parts Kit – Builders Special – Nitride Upgrade


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SKU: 400215100180 Categories: , ,

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TX Arms’ lower parts kits contain all high quality, 100% American-made components, manufactured to our exacting standards. Each kit is guaranteed to fit your Mil-Spec dimensions lower receiver. We don’t use foreign made parts, polymer parts or MIM parts. This kit contains the basics, add your own fire control group, trigger guard and grip for the ultimate custom built lower. This nitride finish upgrade from our standard kit also contains easy-out takedown pin and pivot pin. This product is 100% American Made, and is covered under our TX Arms Lifetime Warranty.


Assembler’s Special Nitride Lower Parts Kit Includes:

  • Bolt Catch, Phosphate
  • Bolt Catch Detent, Blacknitride+™ by H&M
  • Selector, Phosphate
  • Selector Detent, Cadmium Plated
  • Magazine Catch Assembly, Phosphate
  • Fire Control Group Pins, Blacknitride+™ by H&M (2)
  • Takedown Pin, Blacknitride+™ by H&M
  • Pivot Pin, Blacknitride+™ by H&M
  • Takedown Pin/Pivot Pin Detents, Cadmium Plated (2)
  • Buffer Retainer Pin, Blacknitride+™ by H&M
  • Complete Spring Kit
  • 100% American Made