The Foxtrot Mike Products FM-9 Complete 9x19mm AR-15 Upper Receiver is 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. The slim-line free float handguard is M-LOK compatible for your favorite lights, grips, and tactical accessories. The 7” barrel is made from durable 4150 chrome moly vanadium steel and has an FM Products forward blast diffuser attached. This AR-9 upper receiver group mounts to virtually any Glock compatible 9mm lower receiver including Angstadt Arms, New Frontier Armory, Palmetto State Armory, and Quarter Circle 10, so you can build your dream AR style pistol or carbine.

Features:

• Non-Reciprocating forward charging handle
• Left or right side charging
• Machined from premium 6061-T6 aluminum
• Proprietary handguard / upper interlock keeps handguard true to the upper
• M-LOK compatible handguard
• FM Products blast diffuser made from 4340 steel and black Nitride finish
• Limited lifetime warranty through Foxtrot Mike Products
• Complete upper includes bolt carrier group and charging handle.
• Compatible with a large variety of Glock magazine 9mm lower receivers

AR style 9mm carbines are some of the most fun to shoot at the range. With a properly tuned recoil spring and buffer, the 9mm blowback system results in low recoil so it can be enjoyed by shooters of all types. Because 9mm ammo is generally affordable, 9mm pistol caliber carbines make for long days at the range plinking or training. There is also a wide range of ammunition types available from steel cased to high power defensive rounds, so you can use it as an effective home defense solution.

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.