Foxtrot Mike Products Complete 9mm AR Upper 8.5" Glock Style - 8" M-LOK Rail - Blast Diffuser
The Foxtrot Mike Products FM-9 Complete 9x19mm 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. Lastly, the slim-line handguard is M-LOK compatible for your favorite accessories.
- Non-reciprocating fixed 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
- Factory installed blast diffuser
- Limited lifetime warranty through Foxtrot Mike Products
- Complete upper includes bolt carrier group and charging handle
Manufacturers Note: For optimal reliability, FM Products does not recommend using aluminum case ammo in their uppers or complete firearms.
Ratings & Reviews
High quality product with even higher customer service
by Raymond -
Finally had a chance to fire my FoxTrot Mike upper and it runs flawless. Eats up any ammo cheap or expensive. Ran some Tul Ammo through it with no hiccups. Another great part about this company is their customer service. This company lives by that motto. You have an issue you will get a quick response and they will do everything possible to resolve it. Will be buying their 5 1/2 upper next.
Good buy, possible Stern issues however.
by 7620 -
Biggest plus to this upper is the fact that it can run steel case ammo all day. Granted this is my first foray into 9mm AR uppers and I have no idea if this is common across all varieties and brands, but I have thousands of Tula stashed aside and being able to run that ammo for PCC competition reliably is a great plus. Only real negative I can speak to is the incompatibility of the BCG with the Stern AD9 mag block. FM has stated that they never needed the bolt mod service Stern offers (Stern will cut the bolt for a nominal fee) however my experience says otherwise. My bolt would contact the feed ramp, and eventually it kicked the whole block out of the mag well of my AR lower. That being said, that is a compatibility issue and not one of quality, which from what I can tell is excellent. They also boast one of the best customer services in the market and will most definitely take care of you IF the need ever arises. Good buy!
just buy it, you will be glad you did.
I put together an ar9 with this upper, a FM buffer weight, a binary trigger and a mean arms endomag. the results where excellent, Foxtrot Mike products are quality, and the accuracy of the barrel is fantastic. https://youtu.be/NW5PCJ7ni58
Excellent Upper, but dont plan on using the front rail along the entire lenght of the charging handle travel
by Derek -
The fit and finish of this upper is very nice, the ability to move the charging handle over to the right side of the upper is a huge plus for left handed shooters. The only downside I have come across is that the front part of the rail, the first 4 or 5" inches is not usable. trying to mount any type of folding front sight post rubs against the charging handle, even ladder rail covers impact the operation of the forward charging handle. If you purchase this upper (which I would recommend) go into it knowing that you will need in use some type of optic which can be mounded more toward the rear.
Best customer support around.
I purchased this 8.5” upper after firing one at a 3GN event at VIR. Primary delivered as always. Being the stubborn tight ass that I am, I purchased a PSA lower for my build. I got it all together and had issues right away. I checked everything I could check and was completely baffled. I emailed Paul from FM Products and he was very helpful offering several suggestions and even told me if I couldn’t figure it out I could ship it to him and he would make sure it was right before he returned it. I knew there wasn’t a problem with his product at all and I should have been totally on my own with this problem. I will highly recommend them to anyone. Customer service like this is hard to find nowadays.
Great upper! Finish is amazing and it runs with any kind of ammo. I have yet to have any issues. Very we'll made. The firing pin and bcg is topnotch and only adds to the quality of FM products! And their customer service is icing on the cake.
These uppers will definitely get all your friends attention
by Matt -
Absolutely gorgeous!!! I purchased two of these uppers and these things are hands down the best. I love the side charge feature towards the front. They’re light, slim and fits in your hand so natural that it’s just a good feel. Their made well and you can tell when your holding it. Just a really good product. This guy is on to something with these uppers and even though I’m not a competitive shooter I can easy see these uppers being run in the competitive world. They are fast!!! I’m very happy with my two uppers and everything else I’ve got from FM-products for that matter.
Best 9 mm Uppers and Lowers on the Market.
by Rich w/guns
I have purchased two different Side Charging uppers.<br>This one is the Best I have seen and used. <br>My 1st one, from another company, you had to unscrew the side bolt to clean the Bolt Carrier Group, and the knob comes loose while shooting when you continue to screw and unscrew the side charge knob to clean the bolt Carrier group.<br> On the FM version, the side charge knob up toward the front does not need to be removed to slide out the Bolt Carrier group for cleaning. <br>Also, FM products has great customer service, I also bought there lower and they sent me spare parts until we had running like a Swiss watch. I highly recommend their Billet lower with any 9 mm upper.<br>Love this Company.
Will not fire Winchester
by Arvin -
I don't know if I have a bad batch, but it wouldn't fire Winchester ammo (brass or steel case). I have a stash of Winchester and Federal ammo from Walmart. This will fire Federal rounds. I even mixed Winchester and Federal in a magazine, and it will not fire the Winchester at all. Not even a dimple on the primer of the Winchester. Even after FM sent me a new firing pin, it will not fire the Winchester.
Shop no further
by Aaron -
I matched this 8.5 complete upper with an FM billet lower and have to say I'm very impressed! The quality is top notch and the forward charging handle is sweet! I've put about 500 rounds down range so far with not one failure. This gun thus far has exceeded my expectations! The customer service is top notch as well from both PA and FM.
Shop no further
by Aaron -
I used this 8.5 complete upper matched with the FM billet lower and couldn't be more pleased! The quality is top notch and the function has been flawless! Go FM Products you won't be disappointed! Forgot to mention the customer service is also outstanding from both PA and FM Products!
Would I buy it again? HELL YEAH! I've already started stashing a portion of my paycheck away so I can buy the 16" upper without the wife noticing.
by Harold -
There's not much to say... this upper receiver is BAD ASS. Quality of construction is the best I've seen and rivals more popular and more expensive 9mm upper receivers. <br><br>I've paired this upper with a Ranier Arms lower fitted with a CMC AR-15 match flat trigger and a Sylvan Arms 9mm conversion block. <br><br>IT FUNCTIONS FLAWLESSLY!!! NO TUNING, NO ADJUSTMENTS, just swap upper, insert mag block and mag, chamber a round and you're ready to rock. <br><br>The blast diffuser is neat. I've never used one so I'm not sure if it's working the way it's suppose to, but it doesn't seem to affect the function at all.