The FM Products FM-15

Published on July 17, 2022
Duration: 19:35

This review of the FM Products FM-15 Gen 2 highlights its unique AR-15 design featuring an integrated telescopic stock mechanism within the upper receiver, eliminating the need for a traditional buffer tube. The rifle is exclusive to Brownells and was developed by former Wilson Combat engineers. Key features include a billet 7075 T6 aluminum receiver, a non-reciprocating front charging handle, an adjustable gas system with three positions (standard, suppressed, adverse), and a taper-lock barrel nut for enhanced sturdiness. The reviewer notes its lightweight, soft-shooting characteristics and good accuracy, particularly when suppressed, though suggests an upgraded trigger would be beneficial.

Quick Summary

The FM Products FM-15 Gen 2 is a unique AR-15 variant featuring an integrated upper receiver mechanism for a telescopic stock, eliminating the need for a buffer tube. It boasts a 4150 Chrome Moly Vanadium barrel with a 1:8 twist, a 223 Wylde chamber, and a three-position adjustable gas system for optimized performance with or without a suppressor.

Chapters

  1. 00:07Introduction to FM Products FM-15 Gen 2
  2. 00:14Reviewer's Experience and Round Count
  3. 00:20Unique Design: Integrated Upper Receiver Mechanism
  4. 00:39Exclusive Distribution via Brownells
  5. 01:01Founders and Design Philosophy
  6. 01:23Stock Options and Compatibility
  7. 02:12Receiver Construction and Grip
  8. 02:31Front Charging Handle Operation
  9. 02:50Continuous 1913 Rail
  10. 03:04Design Goals: Lightweight, Soft Shooting, Compact
  11. 03:13Suppressor Compatibility and Gas System
  12. 03:24Complete Rifle vs. Upper Receiver Purchase
  13. 03:47Disassembly Procedure
  14. 04:19Lower Receiver and Trigger Assembly
  15. 04:44Adjustable Gas System (Gen 2)
  16. 05:02Barrel Nut and Barrel Specifications
  17. 05:25Unique Gas Block Design
  18. 05:49Flash Suppressor and Suppressor Mount
  19. 06:00Upper Receiver Features (No Forward Assist)
  20. 06:09Handguard and Recoil Spring Assembly
  21. 07:02Adjustable Charging Handle
  22. 07:34M-LOK Handguard
  23. 07:43Bolt Carrier Group Details
  24. 08:16Carrier Key Stress Management Design
  25. 08:47Bolt Carrier Disassembly
  26. 09:14Firing Pin Spring for Slam Fire Prevention
  27. 10:34Charging Handle Reassembly
  28. 10:50Improvements and Criticisms
  29. 11:14Range Test and Shooting Impressions
  30. 17:04Post-Range Session Summary
  31. 17:16Suppressor Performance and Accuracy
  32. 17:23Trigger Upgrade Suggestion
  33. 17:37Overall Reliability
  34. 17:43Side Folding Stock Functionality
  35. 18:00Modifications and Buy Recommendation
  36. 18:14Ambi Features and Potential Upgrades
  37. 18:22Iron Sights
  38. 18:26Overall Rifle Assessment
  39. 18:33Comparison to FM9 Pistol
  40. 18:55Availability and MSRP
  41. 19:02Longevity and Future Updates
  42. 19:10Recommendation for Adjustable Gas System
  43. 19:29Conclusion and Call to Action

Frequently Asked Questions

What makes the FM Products FM-15 Gen 2 unique compared to a standard AR-15?

The FM-15 Gen 2's standout feature is its integrated upper receiver mechanism that allows for a telescopic stock without a traditional buffer tube. This design contributes to a more compact profile and unique ergonomics, differentiating it significantly from standard AR-15 platforms.

What are the key specifications of the FM Products FM-15 Gen 2 barrel?

The FM-15 Gen 2 is equipped with a 4150 Chrome Moly Vanadium barrel featuring a 1:8 inch twist rate and a 223 Wylde chamber. This combination is suitable for a range of .223 Remington and 5.56 NATO ammunition, offering good accuracy potential.

Does the FM Products FM-15 Gen 2 have an adjustable gas system?

Yes, the Gen 2 model of the FM-15 features a fully adjustable gas system with three positions: standard firing, suppressed, and adverse. This allows users to fine-tune gas operation for different ammunition types and suppressor use, reducing over-gassing.

How does the FM Products FM-15 Gen 2 handle suppressor use?

The FM-15 Gen 2 is designed with suppressor use in mind, featuring an adjustable gas system to manage increased back pressure. The reviewer successfully used a SilencerCo 36M suppressor with the rifle, noting good accuracy and reliability after adjusting the gas system and recoil springs.

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