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Questions & Answers
Does this model have a side charging handle or the typical AR rear charging handle? More pictures would be really helpful. Expert Answer

This FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake uses the forward ambidextrous charging handle. Standard AR15 charging handles are not compatible.

by Ethan, Gear Expert, October 31, 2022
Will this work with a mil-spec receiver and if yes, what magwell adaptor is recommended? Expert Answer

The FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake should work with a Mil-Spec lower even though it is recommend to use a pistol lower that accepts Glock .45 ACP magazines. Foxtrot Mike states that the Stern Magwell adapters are not compatible with their uppers and from what information I could find they are the only ones that make a .45 ACP mag well adapter. I recommend contacting Foxtrot Mike to see what .45 ACP mag well adapter they recommend.

by Hunter, Gear Expert, August 23, 2022
Customer Reviews
Helpful Positive Review
This upper is great by don, Verified Owner, September 14, 2022
This is a re-rating. I was sent the 9mm by mistake. Quick turnaround I sent the 9 back on Fri and received the 45 on Wednesday. I installed it on a ar45 lower I built with a echo trigger. I have a 9mm with the same echo sport trigger they are a blast...
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3/3 found this helpful
Helpful Positive Review
Another beauty from Foxtrot Mike by Brent, Verified Owner, February 19, 2023
Wow is all I can say about this upper! Craftsmanship is top notch this is the second FM I own. I also own a FM9 which is what lead me to buy this upper also. It’s great quality for sure. The forward charging is awesome and smooth! OP did send me the ...
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3/3 found this helpful
Helpful Negative Review
I ordered a FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake 8.5 in and got a 9mm 10 in I sent the emails with pictures then had to call. Instead of shipping out the CORRECT one they are requiring me to ship the INCORRECT one back and when the...
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6/9 found this helpful
Most Recent Reviews
45 ar upper complete awesome by datgypsy, Verified Owner, November 29, 2023
Very solid well engineered well manufactured it what I noticed ……………………….6…….. …………………….9……..6……..I’m writing more about the product they don’t seem to kno that when speaking to a person about firearms, especially if they are interested enough to wei...
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0/3 found this helpful
Most Recent Reviews
Sent wrong upper by don, Verified Owner, May 17, 2022
I got this upper in 45cal. I received it 2 days ago opened the box it was a 9mm. I called the customer service guy was really nice about and sent me an email for an RMA to get it swapped out. They paid shipping after 3 days I get an email saying they...
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3/4 found this helpful
Most Recent Reviews
8.5in barrel by Tony, Verified Owner, March 22, 2023
I just received this upper and upon opening it, found I had gotten a 10” ar45 instead of an 8.5” ar45. Luckily it’s still 45, everything looks and feels nice, but it would have been nice to get what is advertised and why was purchased. Recommend not...
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Read All 6 Reviews
Caliber: .45 ACP Barrel Length: 8.5 inBarrel Profile: Ultralight Threads per Inch: 5/8x24 Muzzle Device: Flash Supressor Color: Black Fabric/Material: Premium Match Grade 41V50 Gun Rail: Picatinny Gun Make: AR Platform Gun Model: AR-15 Condition: Factory DEMO Barrel Material: 4150 Chrome Moly Vanadium Bolt Carrier Group Included: MIL-SPEC Magazine Included: No Charging Handle Included: MIL-SPEC Mount Type: M-LOK

Code: 3JR-URC-FC45R8-FM45-FS-109-DEMO

MPN: FM45-FS-109-DEMO

Product No Longer Available

Product Info for FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake

Whether you're running a .45 ACP, .45 Glock, or another 45cal pistol magazine, you can feed these FM Products FM-45 Complete Uppers designed by FM Products from the ground up. To ensure the most reliable and accurate shooting experience possible, FM Products designed these AR15 Upper Receivers with a monolithic style and a M-LOK compatible handguard, and the upper comes with an FM Products Micro Brake muzzle attachment. This FM Products FM-45 Complete Upper .45 Receiver w/ Micro Brake is complete with an FM Products Micro Brake muzzle brake attachment and a bolt carrier group and bolt in place, so you can easily install these on your favorite pistol. For added security, this upper has an all steel barrel with a Chrome Line finish, and it uses match-grade bolts and chambers. Trust this FM Products FM-45 M-LOK Compatible Upper Receiver w/ Micro Brake to deliver premium performance with your pistol caliber rifle.image

Features of FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake

  • Proprietary handguard / upper interlock keeps handguard true to the upper;
  • Premium Match Grade 41V50 Barrel;
  • M-LOK compatible handguard;
  • Complete upper includes bolt carrier group and charging handle;
  • FM Products Micro Brake (5/8-24 thread);
  • Compatible with 45 Cal Glock magazines

Package Contents:

  • FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake

FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake Accessories

113 / 13
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Gunsmithing Tools & Accessories

116 / 16
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Gun Triggers

115 / 15
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Magazine and Accessories

121 / 21
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Gun Parts and Accessories

129 / 29
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Gun Barrels

112 / 12
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Gun Stocks

116 / 16
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Gun Sights

118 / 18
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Mounts, Rings and Accessories

118 / 18
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Related Products to FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake

FM Products FM-45 AR .45 Upper Receiver w/ Micro Brake Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, FM Products FM-45 AR Upper Receiver w/ Micro Brake, .45 Caliber, 10 inch, 8.5in Barrel, Ultralight Profile,Flash Supressor, Black, FM45-FS-109 , MPN: FM45-FS-109-DEMO , Code: 3JR-URC-FC45R8-FM45-FS-109-DEMO
  • FM Products FM-45 AR Upper Receiver w/ Micro Brake, .45 Caliber, 10 inch, 10in Barrel, Ultralight Profile,Flash Supressor, Black, FM45-FS-109 , MPN: FM45-FS-109 , Code: 3JR-URC-FC45R8-FM45-FS-109
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