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M-lok slim rail system by radical firearms - Radical Firearms M-LOK Slim Rail System (FCR)

by Richard Martin, Verified Owner from TN, United States Written on September 28, 2017
Review for Radical Firearms M-LOK Slim Rail System (FCR)
Radical Firearms M-LOK Slim Rail System (FCR)
Radical Firearms M-LOK Slim Rail System (FCR)
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Richard Martin's Review of Radical Firearms M-LOK Slim Rail System (FCR)

I bought the M-LOK rail to install on a Radical Firearms,10.5 AR pistol. It fit every well. The install was difficult because it
required a special 1/2 thick crowfoot wrench in 30 mm. The pistol feels lighter now, and I like the secure fit of M-LOK accessories.
I'm hoping it's has reliable as the original factory rail.
Pros:
  • Lightweight
Cons:
  • installation
Would Recommend: Yes
Was it helpful to you? Yes | No
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Last updated 2026-10-09 UTC.