Foxtrot Mike Products 5" Complete 45ACP AR Upper for Glock Style Receivers - Blast Diffuser
The Foxtrot Mike Products Complete .45 ACP AR upper is the package you have been waiting for to finish your Glock mag AR-9 build. This .45 ACP upper receiver comes with all the features you want in a pistol caliber carbine. It has a 5” barrel with a linear blast diffuser attached that extends past the 5.5” M-LOK handguard. Utilizing a monolithic design that indexes with the flat top upper receiver, this handguard is securely attached and won’t rotate loose until you purposefully take it off. Included is a heavy .45 ACP bolt designed to reliably cycle when used with carbine recoil springs. Keep your lower receiver from getting lonely with this FM Products .45 ACP upper.
- Designed for use with Glock Magazines
- 5” barrel with blast diffuser attached
- 5.5” M-LOK handguard
- Full length picatinny top rail
- Hardcoat anodized black finish
- Includes heavy .45 ACP bolt
- Includes Mil-Spec charging handle
- Compatible with Mil-Spec lowers or dedicated .45 ACP lowers
Whether you plan on building an SBR for home defense or a pistol for the range, this complete .45 ACP upper receiver group from Foxtrot Mike Products is the way to go. Feature rich, high-quality, and affordable, Foxtrot Mike Products offer cutting edge solutions utilizing the highest quality materials and manufacturing processes available.
Manufacturers Note: FM Products does not support the following items, using these may void the lifetime warranty associated with our uppers;
1) FM Products does not support Aluminum Cased ammo. Blow backs have a much higher pressure spike in the chamber than a handgun. Using Aluminum cased ammo in a blow back PCC is dangerous and will void the lifetime warranty of an FM Products Upper Receiver.
2) FM Products does not support import magazines besides OEM Glock magazines. We recommend Magpul, OEM Glock and ETS magazines only.
3) FM Products does not support Spikes Glock style lower receivers. The LRBHO requires consumers to modify the FM Products upper, to make egress for the Spikes LRBHO. The FM Products upper is cut to the Colt spec, therefore we have no plans to deviate from that. Modifying your FM Products Upper to accommodate a Spikes Tactical Glock style lower will void the lifetime warranty on our PCC Uppers.
4) We only recommend Sylvan magwell adapters, as they require no modifications or adjustments to work properly. FM Products does not support Stern Magwell Adapters as they require regular adjustments to work properly.
Ratings & Reviews
by John Flanagan
This was my first pistol build. Purchased this upper and a Foxtrot-Mike 45 Glock lower. WOW I can't believe the accuracy with this thing! It's built like a tank, rock solid.
This 45 upper is great! Perfect cycling right out of the box no failures to fire or ejection problems. Will definitely recommend and purchase another fox trot Mike's product.