Foxtrot Mike Products GLOCK Style Complete AR9 Upper Receiver - 9mm - 5.0"
Details
Details
The Foxtrot Mike GLOCK Style Complete AR9 Upper Receiver at 5" is built to finish a GLOCK-magazine AR-9 build, pairing a linear blast diffuser with a monolithic handguard design that indexes directly to the flat-top upper receiver.
Features:
- 5" barrel chambered in 9mm with linear blast diffuser attached
- Threaded 1/2x36
- 5.0" M-LOK handguard
- Full-length picatinny top rail
- Hardcoat anodized black finish
- Heavy 9mm bolt for reliable cycling with carbine recoil springs
- Mil-Spec charging handle included
- Compatible with Mil-Spec or dedicated 9mm lowers
The monolithic design indexes the handguard to the flat-top upper receiver so it's securely locked in place and won't rotate loose over time, and the heavy 9mm bolt is matched to carbine-weight recoil springs for reliable cycling. Whether you're building a home-defense SBR or a range pistol, this upper gives you a complete, ready-to-run foundation.
Because this 5" barrel measures under 16", this complete upper is subject to all NFA rules and regulations — know your local laws before purchasing, and use it only in an AR pistol or a legally registered short-barreled rifle.
Note: Foxtrot Mike's lifetime warranty excludes aluminum-cased ammunition, non-OEM Glock magazines (Magpul, OEM Glock, and ETS are recommended), Spikes Tactical Glock-style lowers, and non-Sylvan magwell adapters — using any of these can void coverage.
Foxtrot Mike builds feature-rich, affordable AR-9 and AR-15 uppers backed by a limited lifetime warranty, using premium materials and modern manufacturing processes throughout.
Specifications
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.Ratings & Reviews
19 reviews
Love it!!
by Dr. King Schultz
Running on a PSA lower using Endomags.. 600rds, zero FTF, zero FTE. 100% perfect.
Love this little 9mm upper
by 10-mm_man
Had problems with the 9mmm adapter by American Tactical once I fix that it run like it's champ would definitely recommend this but get a good adapter and 9 mm I would recommend a 9 mm adapter by American Tactical so far three hundred rounds through it no jams it could have been packed better purchase it through primaryarms would have gave it five stars but for the packing knock one off
2 thumbs up
by Dan
First shot at 20 yards was dead on. After 300 rounds through it, couldn’t be happier.
Great except when paired with AM-9 lower.
by Shawn
Works great except not compatible with Anderson AM-9 lower LRBHO. Their website warns against Spikes lower and Stern adapter, but add this to the list. Works flawlessly with LRBHO removed but that isn't what I bought it for.
FOXTROT MIKE, Best 9mm AR in the market.
by AL -
I received today my FOXTROT MIKE 5" upper and FM9 Premium 9mm Lower Receiver along with a few Magpul GL9 PMAG 15 Glock 19. After clear up the background check and completed the transfer, I when ahead and test the product. I shot out of the box (I just lubricate the 9mm bolt and trigger) 400 rounds without any malfunction. Very happy with my FM 9mm AR. Extraordinary quality and well machinery lower. The 9mm Ar Bolt Carrier Group is one of the best that I tested. Overall, I'm happy with FOXTROT MIKE performance. Shout out to the Primary Arms team to bringing these products to the market and for the alliance with FM.
Its de best
by Tyler -
Mounted on a spikes lower with the stern defense Magwell adapter and fostech echo trigger. Functions flawlessly, bought a 7 in barrel to better fit my suppressor. Shot suppressed tonight for the first time and did great. Would buy again and recomend to my friends often
Damn this is a hoot! Ran like a sewing machine!
by Uberine
We just spent the weekend running the new upper, ran like a dream. 0 issues, ate hollow points and steel cased ammo perfectly. Fit and finish is amazing, nice tight fit to my FM Lower. Highly recommend this, great price, killer customer service.
Just disappointing.
by Des -
I've got to admit I'm disappointed. Seems the inherent problem with 9mm uppers' feed ramp is prevalent on this one. Glock factory mags seem to do worse than Magpul, but there is a lot of FFTF because the lack of a feed ramp, and not enough bevel. Otherwise it's built really well, and I like the bolt. I haven't decided if I'll return it, or machine it to suit my need. If you want something to run out of the box with a Spikes GLock Lower, I wouldn't recommend this.
Dependable and accurate
by Erik C. -
Got this to go with an FM hybrid lower. Very light weight and portable set up. Functioning has been 100%. Accuracy is excellent, easily shooting into 2" offhand at 25 yards. Been using the 21 round P mags loaded with 20 rounds and CCI Blazer brass 115 gr. ammo.