Foxtrot Mike Products ISU-9 9mm Integrally Suppressed Complete AR9 Upper Receiver - 10"

The Foxtrot Mike Products ISU-9 is an integrally suppressed 9mm upper receiver with a 10" barrel, built around FM Products' patented suppressor system. Gas enters the suppressor through precision ports in the barrel, so suppressor back pressure helps run the action and the upper does not need a heavy bolt and buffer. It fits a 9mm AR-pattern lower.

Features:

• 9mm integrally suppressed upper receiver, 10" barrel, based on the VFM-9 platform
• Six-baffle stack: a stainless steel blast baffle and five 7075-T6 aluminum baffles, with a conical spring
• Seamless stainless steel outer tube, 1.00" outside diameter, with a removable silicone sleeve
• Barrel ports that intersect the lands of the rifling, with a flash suppressor end cap
• Designed to bring tested standard 115-grain 9mm loads to subsonic speeds and to accommodate 124-grain and heavier ammunition
• 8.6" handguard with 28 full-size M-LOK slots; standard M-LOK hardware installs without removing the handguard
• Forward charging and rear charging with a mil-spec AR charging handle
• Heavy duty firing pin spring and extractor spring, 9mm bolt carrier group
• Suppressor disassembles with common tools for cleaning
• Transferable lifetime warranty

The ISU-9 vents gas through its suppressor, which keeps the moving mass down and the cycling smoother, so recoil is softer. It was designed to complement the FM Products RMB recoil mitigation buffer. An integrally suppressed upper collects more carbon than an unsuppressed 9mm carbine and needs more frequent cleaning. Actual velocity varies by load and conditions.

Foxtrot Mike Products is a firearms manufacturer based in Boise, Idaho.