Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Special offer available for this product. Click here to see!
Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
Questions & Answers
Can you used 5.56 ammo on this ?

it is chambered in .223 Wylde which handles 5.56 NATO and .223 rem. the chamber tolerances are tighter which is said to help with accuracy.

by Mark, Verified Owner, June 28, 2025
Customer Reviews
Helpful Positive Review
Something new and fun by DirtyG, August 13, 2023
So far very impressed with the product. Still not sure about the pin that has to be replaced every 1000 rounds. If you are looking to buy be aware of the maintenance and break in process. It's a very versatile product. The people at the range liked i...
Read More...
1/1 found this helpful
Helpful Negative Review
Thought this would be something unique for the range. I WAS WRONG. When I first took the upper out of the packaging a few aluminum shavings fell out. One being about as big as a cat's claw. I didn't think too much of it because the upper looked s...
Read More...
2/4 found this helpful
Most Recent Reviews
missing parts by marine2f2, Verified Owner, March 7, 2025
Lower parts kit was missing a bolt catch (spring and detent were there) and also did not come with the pictured A2 flashhider...came with some blast diverter nonsense. Not pleased
Most Recent Reviews
Great price by Jimmyjohn, Verified Owner, September 3, 2024
This is my second fm upper it has some quirks but it's a great value compared to other bufferless uppers.
Read All 4 Reviews
Show In Stock Only
2 Models Available
Barrel Length
All
Gas System Length
All
Handguard Length
All
Search

Product Info for FM Products Mike-15 .223 Wylde Gen 2 Build Kit

The Mike-15 .223 Wylde Gen 2 Build Kit from FM Products is exactly what you need to complete your AR15 build! These AR15 Upper Receivers are available in a variety of lengths with pistol-, carbine-, and rifle-length gas systems, so you can easily find the one you need to match your lower receiver and build the firearm that fits your exact specifications. Plus, the FM Products Mike-15 .223 Wylde Gen 2 Build Kit comes with all the parts and accessories you need to attach your upper and finish the build, so this all-in-one build kit is all you need. If you've been looking for a reliable, tactical upper receiver, pick up the FM Products Mike-15 .223 Wylde Gen 2 Build Kit today!image

Specifications for FM Products Mike-15 .223 Wylde Gen 2 Build Kit:

Manufacturer: FM Products
Caliber: .223 Wylde
Barrel Twist Rate: 1-8
Threads per Inch: 1/2x28
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Color: Black
Condition: New
Magazine Included: No

Features of FM Products MIKE-15 Buffer-less .223 Wylde Gen 2 Upper Reciever:

  • Picatiny Rail Adapter is included, allowing consumers to build a sleek modern buffer-less firearm, using folding or collapsible stocks.
  • All small parts required to complete your gun are included, lower parts kit, trigger group, grip etc (stripped mil spec lower receiver not included).
  • Kits are offered in 9'. 12.5”, 13.9” and 16” barrel lengths.
  • Gain knowledge and experience by building your own gun, all you need is a serialized Mil Spec Lower receiver.

Package Contents:

  • FM Products MIKE-15 Buffer-less .223 Wylde Gen 2 Upper Reciever
  • Blast Diverter
  • Thril Rugged Tactical Grip

FM Products Mike-15 .223 Wylde Gen 2 Build Kit Orderable Models

List of Orderable Models

  • FM Products MIKE-15 .223 Wylde Gen 2 Build Kit, 16in, Intermediate, 4-Position Front Charge, 15.5in M-LOK Handguard, A2 Flash Hider, Black, MIKE15K-223-G2-16I-2T , MPN: MIKE15K-223-G2-16I-2T , Code: 3JR-URC-WG2K-MIKE15K-223-G2-16I-2T
  • FM Products MIKE-15 .223 Wylde Gen 2 Build Kit, 12.5inch Mid Length, 4-Position Front Charge, 11.75in M-LOK Handguard, A2 Flash Hider, Black, MIKE15K-223-G2-12.5M-2T , MPN: MIKE15K-223-G2-12.5M-2T , Code: 3JR-URC-WG2K-MIKE15K-223-G2-12-5M-2T

FM Products Mike-15 .223 Wylde Gen 2 Build Kit Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, FM Products MIKE-15 .223 Wylde Gen 2 Build Kit, 9inch, Pistol Length, 4-Position Front Charge, 8.25in M-LOK Handguard, Micro Blast Diverter, Black, MIKE15K-223-G2-9P-DT , MPN: MIKE15K-223-G2-9P-DT-DEMO , Code: 3JR-URC-WG2K-MIKE15K-223-G2-9P-DT-DEMO
  • FM Products MIKE-15 .223 Wylde Gen 2 Build Kit, 9inch, Pistol Length, 4-Position Front Charge, 8.25in M-LOK Handguard, Micro Blast Diverter, Black, MIKE15K-223-G2-9P-DT , MPN: MIKE15K-223-G2-9P-DT , Code: 3JR-URC-WG2K-MIKE15K-223-G2-9P-DT
Compare (0)