



TNTE J.A.C.K. Uppers
The J.A.C.K. (Just Another Carbine Kit) is designed to provide a solid foundation for your next build by using high-quality, US made components. The barrel and gas system are the heart of your rifle and TNTE takes the worry out of your build by supplying you a DIY framework that can be customized to your preference. We pin the gas block, mount the barrel to the upper receiver and install the gas tube.
TNTE J.A.C.K. Uppers
The J.A.C.K. (Just Another Carbine Kit) is designed to provide a solid foundation for your next build by using high-quality, US made components. The barrel and gas system are the heart of your rifle and TNTE takes the worry out of your build by supplying you a DIY framework that can be customized to your preference. We pin the gas block, mount the barrel to the upper receiver and install the gas tube.
All uppers ship via UPS, this means we need to have your physical address for shipping.
(NO PO BOXES FOR UPPERS). Uppers groups require a signature at delivery.
If you need to ship to an address different from your billing address, or if manual verification is required, you must provide a copy of your state ID for the order to be processed. This measure is in place to protect both you and us from the significant costs associated with credit card fraud.
We do trade coins too, if you want to send one in, we will send one of ours back to you.
WARNING: Some of the products on this website can expose you to chemicals including lead, which is known by the State of California to cause cancer and birth defects or other reproductive harm. For more information please go to www.P65Warnings.ca.gov.