The Brownells exclusive FM Products FM-9 8.5” Complete 9x19mm Upper Receiver comes with an industry first “Tri Lug Barrel” standard. The compact Brownells Exclusive 8.5” Tri-Lug FM9 Upper comes with a 8.5” M-LOK compatible handguard and a 10.5” Tri-Lug Barrel. This allows for the quick connect of many supressors, without having to get a muzzle adapter.



The FM Products Upper is feature rich and cutting edge. Built from the ground up to provide outstanding reliability and accuracy with a host of top tier features. The traditional M4 charging handle has been replaced with an ambidextrous, non reciprocating forward charging handle. The monolithic style has been achieved with a proprietary interlock between the upper and handguard. Lastly, the slim-line handguard is M-LOK compatible for your favorite accessories.

Includes M-LOK compatible Handguard

Feature an Ultra Light PCC barrel

10.5” Tri Lug Barrel, made from 41V50

Inside Diameter of handguard is 1.3”

Features 10.5" Ultra Light Barrel with a 8.5" Handguard for an ultra compact upper

Made in the USA

Type 3 Hard Anodize finish

Manufactured with ISO:9001 and AS:9100 quality certifications

Allows for quick connect of many supressors with no adaptor.

Non-folding ambidextrous charging handle

Limited lifetime warranty through Foxtrot Mike Products

Complete upper includes Ultra Premium Bolt Carrier Group

For Glock®

Foxtrot Mike Products FM9 Upper Receivers are not compatible with Korean magazines.



Big Book Catalog, Issue:72, Page:005