80 Milling Practice Lowers
Practice_Lowers_01 Practice_Lowers_01
80 Milling Practice Lowers 80 Milling Practice Lowers

AR-15 80% Practice Milling Lower Receiver

(1 customer review)


Milling Practice Raw 80 Percent Lower


80 percent lower is not an FFL item and is Classified by the ATF as a non-firearm.

Out of stock

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SKU: Practice-01 Categories: ,


The sole purpose of these functional errors are to practice your milling skills for creating an 80% lower to a 100% lower.  Save your expensive lower for your second try and make your milling mistakes on this cheap piece of metal.  We made milling mistakes that are totally not suitable for a firearm, that being said you might be able to pull off an epoxy & machining miracle in order to turn this into a firearm, but that is not our goal here with this product.  Our goal is to use this as a cheap teaching aid or an an experimental and sacrificial piece of metal to try on first.

Order 1 or 100, same amount of flat rate shipping applies.

Other states where 80% lowers are restricted or illegal include (we will not ship this item to these states):

  • California
  • Colorado
  • Connecticut
  • Illinois
  • New Jersey
  • New York
  • Washington D.C.
  • Hawaii
  • Rhode Island
  • Washington State


Please note: Some states may not allow you to legally manufacture a firearm
without a serial number (like the state of NJ and Washington DC). Please be sure
to do your due diligence and make sure you are following your state and local laws
before attempting to manufacture a firearm. This is not intended and should not be
construed as an advertisement or offer for sale of any of our products to New
Jersey or Washington DC residents or any person in New Jersey or Washington DC or any of the states listed above.

1 review for AR-15 80% Practice Milling Lower Receiver

  1. Mark Doss (verified owner)

    The lower I received is a “Black Guns Matter” example. I was expecting a raw finished part so yu can imagine my surprise and delight. I have looked this lower over with a magnifying glass andI cannot find a blemish worthy of rejection. I guess the folks at CryoStructure have higher standards than I do, which is a good thing. My order arrived well packed and very quickly. I am very happy with the quality of the lower and the entire experience. I won’t hesitate to buy from CS in the future if I need/want something they carry.

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