The Ghost Guns Signature AR40 .40 Caliber Completed Upper Receiver. This complete .40 cal upper matches perfectly to our AR40 .40 80 Percent Lower Receiver. It comes with upper portion of your .40 caliber dedicated pistol build including the Bolt Carrier Group, extended ambi charging handle, and A2 Birdcage Flash Suppressor.
Ferfrans CRD + CQB (modified for .40 cal.) Muzzle Device Optional
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Introducing the Ghost Guns Signature AR40 40S&W Complete Upper Receiver. Upper made from high grade 7075 T6 aluminum to mil-spec tolerances. This complete 40 upper matches perfectly to our AR40 80 Percent Lower Receiver. It comes with everything you need to finish the upper portion of your 40S&W dedicated pistol build including the Bolt Carrier Group and extended ambi charging handle.
Comes standard with an A2 Birdcage Flash Suppressor, upgrade available for the (modified for .40 cal.) Ferfrans Concussion Reduction Muzzle Device using a thread adapter.
Barrel: Featuring a 4" 40S&W barrel with
Bolt Carrier Group: 40S&W Bolt Carrier Group USA made with 8620 steel with a magnesium phosphate finish. Ramped carrier to work with all standard hammers. Cut for use with Glock and Colt style builds, ours is a Glock style build.
Hand guards: 3.5" MLOK custom machined from 6061 aluminum. Hard coat anodized black and ready for any of your MLOK attachments.
In order to build a complete rifle, pair this complete upper with our AR40 40S&W 80 Percent Lower Receiver, our AR40 40S&W Lower Parts Kit and our Buttstock Assembly. With all four pieces, you will have everything you need for a complete build!
**AR Pistol builds are known to having feeding/chambering issues. This is due to the buffer/spring combination people are using in their buttstock assembly. We have tested our buttstock assembly to ensure our buffer weight/spring tension works with our uppers and are confident in our builds. As always, if you have any questions or issues, email us at firstname.lastname@example.org and we'll help right away!