FJB Multi Cal Lower ***FFL Required***

Product Code: 10163 RAW
Read (10 reviews) Write a Review


Was: $69.00
Now: $29.99
Quantity in Stock Quantity in Stock: Out of Stock
Maximum Purchase:
3 units

Out of stock

Build at home

American made product

100% satisfaction


FJB and The Tyrants

  • We at Tactical Machining are sick and tired of the “man” making up whatever rules they want to try to hinder law abiding citizens from manufacturing their own firearms.
  • While we are fighting that battle on the legal front we would like to introduce the FJB-15.
  • We are offering this to everyone at below our manufacturing cost to help arm as many Americans as possible in these tumultuous times.
  • Shipping to a FFL is required.
  • We have also added a donation tab to help us fight this battle, but please do not feel obligated to donate.
  • Thank you all for your continued support it means more to us than you know.
  • Limit 3 per customer, and please no multiple orders.


  • Set screw not included, available for purchase.
  • ***Trigger guard not included***
  • Forged from 7075-T6 aluminum by Cerro these AR-15 Lower Receivers start from the best materials available.
  • The AR-15 Lower receiver is tumbled and deburred with a natural finish.
  • Our AR-15 Lower Receivers include an upper tensioning set screw hole to tighten the upper and lower fit to your liking.
  • The magazine well is broached for consistent magwells from part to part.
  • If looking to build something other than your standard 5.56mm AR-15 build we have a compatibility list.

AR-15 Lower Receiver

This is your standard mil-spec lower receiver. We pay special attention to the core features to ensure that the function is 100% reliable. The magazine well, fire control group, front lug cutout, rear lug cut out and buffer tower are all cut in the same operation to ensure proper alignment.

What other parts do you offer?

We also manufacture AR-15 upper receivers, AR-15 handguards and other miscellaneous components for the AR-15 platform. You can usually buy one of our build kits and save some money.

FFL Info+

When ordering an FFL item from us it is important that you understand the process. We cannot ship your order to your house, so we must ship it to a licensed firearms dealer. We do not have a network of dealers but can gladly call a few dealers in your area to find one that will accept a transfer. Once you have found a dealer that will accept a transfer, have them provide us a copy of their FFL and we can ship the item to them.

By fax: 386.490.4890
By email:


  • blemished: No
  • color: Raw
  • manufacturer: Tactical Machining
  • platform: AR-15
  • Weight:: 1.00 LBS
  • 10 Reviews Hide Reviews Show Reviews

    • 5
      Excellent product.

      Posted by Gordon on Sep 20th 2022

      The machining on these lowers is excellent. It not only looks great but it also works great. Joe was very helpful and friendly. Will buy from them again.

    • 4
      FJB lower

      Posted by Chris on Sep 20th 2022

      The lower is awesome! Every sane person should have at least one of these!! The etching could be a little deeper but still well worth the money!

    • 5
      FJB Lower

      Posted by Billy on Sep 19th 2022

      This product is amazing, it filled me with joy when they announced it and I immediately purchased 3 of them. They are guaranteed to fill you with patriotic pride and satisfaction when you look at them and the quality is outstanding, 15 minutes after I picked mine up from the gun store I got an email that my credit score went up 21 points. Would recommend pairing it with a SOLGW parts kit to round out into an all American package.

    • 5
      Looks good

      Posted by Billy on Sep 14th 2022

      Looking forward to putting these together

    • 5
      Fantastic Quality Lowers

      Posted by Scott on Sep 13th 2022

      Great lowers! Everything is in spec and great quality. I will be trying my hand at polishing then anodizing them.

    • 5
      AR parts, Great Product Always

      Posted by Gerald Thaxton on Sep 9th 2022

      Have been buying TM products for many years, always great product fantastic service.

    • 5
      FJB Lower

      Posted by Rafael Rivera on Sep 6th 2022

      Engraving logo looks great. Needed to be engraved deeper. When cerakoted it hardly shows the writing around The logo

    • 5
      FJB lower

      Posted by Glen Parshall on Sep 3rd 2022

      FJB! These are GREAT! Working out how I will cerakote them to finish. Order some today!

    • 5
      FJB Multi Cal

      Posted by Robert on Sep 2nd 2022

      FJB x 2