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Reviews & Ratings for Radical Firearms M-LOK Slim Rail System (FCR) — 10 reviews

(10 reviews)
Radical Firearms M-LOK Slim Rail System (FCR)
Radical Firearms M-LOK Slim Rail System (FCR)
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Most Helpful Positive Review Radical Arms FCR Hand Guard
I was looking for this particular hand guard in 15" to replace the 12" that came on my rifle. Optics Planet had it substantialy cheaper than anyone else and had it in stock. It shipped in 3 days and arrived in 10 days via FedEx surepost. I'm happy with the part and very satisfied with Optics Planet....
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Most Helpful Negative Review Value priced handguard
This a great price compared to other hands guards costing two or three time the price of this one. This is a decent hand guard. The finish was not the best ,but acceptable. After I sprayed it down with w-40 and wiped it clean it looked a lot better. It is light weight and comfortable. It is advertis...
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Radical Forearms M-lok

by Ryan, from MI, United States Written on March 21, 2021
This is a good rail. It’s very slim and light weight. I would recommend it to a friend. I just wish their finish was a little more resistant to oil. It kind of soaks it in a little. And leaves a dark spot.
Would recommend: Yes
1 of 1 found the following review helpful.
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Picture is not what you actually get

by Zach M, Verified Owner from CO, United States Written on March 11, 2020
Either False Advertisement or They shipped the wrong hand-guard... I got not only a blemished part but its also the Wrong style... The finish is pretty bad... The hand guard I got has the mounting bolts at the bottom and is clamp style not the style as seen in the pictures! at least its still mlok I guess... the rail on the top is also thinner width than the rail on my Anderson upper so it just looks shoddy!
Pros:
  • Lightweight
Cons:
  • poor finish
  • Wrong Item
  • scale incorrect
Best Used for:
  • Cheap
  • airsoft?
Would recommend: No
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Perfect fit

by David Frazer, Verified Owner from TX, United States Written on August 1, 2019
Found this item, on an awesome sale, for my 9mm carbine build. Perfect fit for an awesome look. Well made with MLOK on the entire length. Came with the barrel nut. Although I don't have to worry about indexing, the barrel nut fits flush and the rail itself doesn't require indexing for a perfect fit.
Would recommend: Yes
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Slim, Lightweight and Nice feel in your hands

by Spudhut, Verified Owner from AR, United States Written on February 13, 2018
This is a nice slim, and lightweight rail. Fits well in your hands, especially for 'thumb-over' grip near the muzzle of your rifle. However, Tightening the barrel nut was somewhat of an issue. Using a standard AR Wrench is not the advised way to install/tighten; even if the instructions tell you to use it. The metal is soft and you risk mushroom'ing the screw holes; which I did. I had to file the metal to get the rail to fit properly. Use a large open-end wrench.
Pros:
  • Lightweight
  • slim
  • nice fit
Cons:
  • None
Would recommend: Yes
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Radical firearms

by Scott Morgan, Verified Owner from VA, United States Written on February 11, 2018
Radical makes good stuff. This rail is nice and light. Comes with a shim for the barrel nut in the off chance you need to space it out to align the screws. It doesn’t have any alignment tabs, so you game use a straight edge or a pic mount to get it lined up.
Pros:
  • Price
Cons:
  • None
Would recommend: Yes
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Fantastic Rail

by James, Verified Owner from TX, United States Written on January 20, 2018
I really like this rail, A LOT. It's a slim rail, but fit easily over my low profile gas block. It comes with a steel barrel nut. I really like that the barrel nut is smaller in diameter so the gas tube runs over it, not through it. Saves a little time not worrying about lining holes up. It came with three shims as well. The fitment was spot on, as the rails met perfectly. I did rub some gun oil on it when it came in that removed some haze from the machining process. This will be my go to rail going forward.
Would recommend: Yes
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good quality

by DannyD, from LA, United States Written on November 8, 2017
Fit and Finish were great for a product at this price point. Locks onto barrel nut very solid. No slop or play. Happy they sent spacers for the barrel nut. Installed 2 of these. Spacer use depends on the rifle, one needed 3 the other needed none.
Pros:
  • Price
  • Quality
  • EASY INSTALL
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No
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M-LOK Slim Rail system by Radical Firearms

by Richard Martin, Verified Owner from TN, United States Written on September 28, 2017
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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