JF-9 Builder Set

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Machined from Billet 7075 T6 Aluminum



Machined from Billet 7075 T6 Aluminum

No Forward Assist Provisions

M4 Feedramps



This billet lower is designed to work with standard AR15 components and Glock Style magazines. It has pocketed details on both sides along with a new sleeker front to the magazine well with scalloped details on both sides. The rear takedown pin detent hole is threaded for a 6-32 set screw. It is also threaded for a upper receiver tension screw to help reduce any play between the upper and the lower. It comes with the 9mm Ejector, Lifter Arm and Glock Magazine Release Lever already installed. The Upper Receiver Tension Screw, Bolt Catch Dog Leg Set Screw and Rear Detent Screw are shipped uninstalled.


Cerakote of your choice is included. MultiCam and other patterns may apply additional fees.

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Shipping & Returns

Shipping Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.

Returns Policy

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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