Strike Industries Drop-In Free Float Mega Fins Handguard

Strike Industries Freefloat Mega Fins / Keymod handguard.

Strike Industries Freefloat Mega Fins / Keymod handguard.

It is no secret that Strike Industries turns out some of the most innovative AR-15 parts on the market. I think Strike has a bottomless pit of ideas because they turn out new and exciting products at a rate that makes me believe that there might be some sort of witchcraft involved. No matter how they come up with this stuff, Strike never disappoints.

I was brought on to The Firearm Blog as a Staff Writer a few weeks ago to take some of the review load off of Alex C. so he can concentrate more on TFBTV (shameless plug, click here to be taken to the channel). It was only a few days after everything was finalized that Phil sent me an email giving me a heads up that Strike Industries was going to send me a drop-in handguard for review. I was pretty excited about it because my SBR was in desperate need of updating. I had been running a Knight’s Armament M4 RAS for almost the last decade on my primary rifle.

My SBR before the new handguard.

My SBR before the new handguard.

I started out by taking a look at the new handguard. Strike did an outstanding job with the packaging, so many of the accessories sold today are sold in plain boxes. The well designed box was a refreshing change.

Strike Industries Drop-In Mega Fins handguard arrived!

Strike Industries Drop-In Mega Fins handguard arrived!

Below is Strike Industries’ description of the Mega Fins Drop-In Handguard.

Strike Industries is proud to introduce our two piece Key-Mod free floating drop in hand guard. Available in four lengths to fit virtually any configuration you may have including a 12” carbine length FSP cutout model. This rail has extremely solid lock up! Drops right in, no gunsmith installation required and installs in just minutes! This rail incorporates a monolithic type continuous MIL-STD 1913 top rail and full 7 angled Heptagonal Key-Mod sides for optimum accessory placement. Our Drop-In Mega Fins two piece free-float hand guard is lightweight, rugged and is hard anodized to military standards. If you want the look of a one piece hang guard without the hassle this rail was made for you.

Product Spec:

Length with Screw w/o Screw
7″ 4.6 oz 4.4 oz
9″ 5.6 oz 5.4 oz
12″ 7 oz 6.8 oz
12.5″ FSP 7.8 oz 7.6 oz

Package include:
» 1 x Drop in mega fin
» 1x Screw set

Features:
» Incredibly lightweight
» No gunsmith required
» KeyMod on all sides
» Free Floating handguard
» Full 7 angled Heptagonal Key-Mod system
» Mega Fins heat transfer dispersal technology

The handguards were packaged in some bubble wrap to protect them in shipping. Strike was nice enough to include the required hex wrenches needed for installation as well as some cool patches.

After unboxing.

After unboxing.

Now, I had a bit of a problem. I have a fixed front sight post on Dusty (the name affectionately given to my SBR during a hunting trip) that I am going to have to replace with a low profile gas block. Thankfully I had a spare gas block in my parts bin. I started with pulling the muzzle device.

Gonna need to change the sight out ....

Gonna need to change the sight out ….

After a bit of work the upper was ready to get the new handguard. I do want to stress that on most rifles this wouldn’t be necessary, many new rifles are offered with a low profile gas block from the factory.

After a bit of labor the upper is ready for the new handguard.

After a bit of labor the upper is ready for the new handguard.

Now to install the new handguard! As you can see the drop in rail fits over the barrel nut like a lot of aftermarket handguards making installation extremely easy.

Installing the top part of the handguard.

Installing the top part of the handguard.

After installing the second half of the handguard the next step is installing the 4 provided screws. I started with the screws that attach the handguard together.

Connecting the two parts of the Mega Fins handguard.

Connecting the two parts of the Mega Fins handguard.

The next step is to install the 9 set screws that keep the handguard in place. Make sure to use the short set screw on the bottom of the rail.

Installing the set screws.

Installing the set screws.

Don't forget the short set screw is for the bottom hole!

Don’t forget the short set screw is for the bottom hole!

Job done!

Job done!

Job done!

The top rail alignment is spot on. This is something I have had issues with in the past with other rails.

The top rail alignment is spot on.

The top rail alignment is spot on.

Now to throw some HK drum sights on the rifle and call it done.

Strike Industries Freefloat Mega Fins / Keymod handguard.

Strike Industries Freefloat Mega Fins / Keymod handguard.

I am really impressed with the quality of the Mega Fins Drop-in handguard. If you happen to be in the market for a free float keymod handguard I highly recommend that you check out Strike Industries offerings here. With several length options (7″,9″,12″, and a 12.5″ front sight cutout version) they will have a product that fits your application.

The MSRP of the handguard tested is $149.00, other models range from $139.00 to $159.00 depending on length. They are rather reasonably priced, especially when you consider that many free float rail systems top the $300.00 mark.



Patrick R

Patrick is a Senior Writer for The Firearm Blog and works in the shooting sports industry. He is an avid recreational shooter and a verified gun nerd. With a lifelong passion for shooting, he has a love for all types of firearms, especially handguns and the AR-15 platform. Patrick may be contacted at tfbpatrick@gmail.com.

The above post is my opinion and does not reflect the views of any company or organization.


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  • Mike N.

    That’s a good alternative to the DD Omega.

  • Charlie Taylor

    Wish they offered a model in M-Lok, then I’d get one.

    • BillC

      Midwest Industries or ALG are good options.

      • Harold

        Not for a two piece rail that uses the delta ring.

  • thedonn007

    This looks a like a good option for those that do not want to remove the barrel nut or cut the delta ring off. I would prefer an ALG EMR over this design though.

  • ruinator

    Damn, one week after I finish my build. Agree with you Strike Industries makes so good stuff!

    • Patrick R.

      What handguard did you end up going with?

  • BillC

    Midwest Industries or ALG are great options.

    • BillC

      This was supposed to be a reply to Charlie Taylor.

  • Lando

    So you got a free rail, took some pictures, and mounted it to your rifle. That does not exactly qualify as a review.

    • Patrick R.

      Seeing as this was my first review for the blog any other points you would like me to address in the future would be welcome advice. I thought highlighting the ease of install (provided you don’t have a fixed front sight post like I did) was one of the huge benefits of this handguard.

      • John

        Start with shooting it. 🙂

        • Patrick R.

          Not that I would need an excuse to go shooting, but in the future I will do what I can to accommodate. I referenced other similar reviews and based this one on that template. If readership would find me running some ammo through the gun as useful, I would be glad to.

          • Dave

            unless the handguard is built just for showpieces it’d be nice to actually see some field use on it. good job putting the price and the weights in the article though, those are important details.

          • Cymond

            Shooting might help illuminate how well the handguard handles heat, how it feels in the hand after prolonged use, etc.

            I’m also curious how well it would hold zero if you mounted a sight on the handguard. (Since most free-float handguards don’t drop in as 2 separate pieces.

          • Greg

            I got the 12″ drop in Mega Fins and love it! I ran into the same issue as Patrick of the front sight post not realizing they even offer the FSP-Cutout version! I already had installed it and shot with it a few times now. For me, not shooting full auto and just having fun at the range the heat isn’t an issue. It got a little warm after dumping a few mags at a decent rate which is expected with such a slim handguard, but it wasn’t unbearable. Wear gloves if you cant stand the heat. The Mega Fins are designed to take the heat from the barrel which should, in theory, prolong the life of the barrel.

            The rail holds zero no problem because of how sturdy the rail is due to its design! Now if I had known and gotten the FSP version that wouldn’t even be an issue I would have to think about. Extremely happy with this purchase, they did a great job! Good job Patrick!

          • Patrick R.

            Thanks for the update Greg, very glad you are happy with yours.

  • Drew

    I’d get it if it was in M-lok, i just prefer the magpul accessories.

  • Jeff Smith

    I’d love to see a follow up where you measure temperatures of the barrel with each rail on the rifle after 30 rounds and again after 5 minutes of letting the rifle cool. I’d love to know if the fins actually help to cool the barrel.

  • Alucard

    I’m getting sick of all these rails,if you need rail attachments to make you a better shot then you weren’t a good shot to begin with.Otherwise they look lame IMO,bring back non-railed guns ASAP.

    • MR

      You might notice that the reviewed item doesn’t have “all those rails”, just the one on the top.

      • Alucard

        You’d be wrong on that,it has keymod which is a type of rail.

    • Ben

      The hipster is strong with this one.

      • Alucard

        Wrong,the hipsters are ones who have to have everything tactical and go long with fads such as the AR-15 craze.

        • Harold

          Thanks for supporting all gun interests and rights. See you on the trap stands Sunday afternoon in your Burberry and $3,500 6′ long shotgun. My wife made scones for afterwards. Cheerio.

  • Adam aka eddie d.

    Patrick, you didn’t mention how long your barrel is and what size handguard SI have sent you. Are you running the 9″ version on an 11.5″ barrel per chance?

    I really like these Mega Fins rails, they’re light, very well designed, and they don’t rip you off. Strike Ind. makes some really nice parts and accessories.
    Maybe it sounds strange, but the two things that attract me the most to this handguard
    are the heptagonal shape and the length-wise striations.
    Nice to the touch, and even looks great.

    To be quite frank, I don’t really like the direction they went with their new M-LOK rail.
    They’ve changed the OD, went to a complex “too much” design, and ditchd the striations too.
    If I were in their place, I’d just machine the M-LOK slots into these regular Mega Fins,
    and be done with it. Can’t see a reason why a perfectly fine, proven product needs messing with.
    I’m happy they’ve made the drop in version of the “old” Mega Fins though!
    If we have any luck, they’ll work with the Adams Arms piston kit.
    It’s drop in and most importantly uses a standard delta ring, which is a good start.

    • Patrick R.

      I am running the 9″ hand guard and a 10.5″ barrel.

      • Adam aka eddie d.

        Thank you Patrick!

  • Harold

    Great post and pics Patrick R. I have an old A2 model that I have been waiting for two piece drop in hand guards that use the delta ring that aren’t Magpul

    • Patrick R.

      Go for it! I think the 12″ model might be the right choice there. Although, I have an a2 build I completed last year that I can’t bring myself to do anything other than leave stock.

  • USMC03Vet

    What kind of iron sights are on that first picture?

    • Patrick R.

      Those are HK drum sights off a HK MR556 that I picked up second hand.

  • Alucard

    I’d prefer if the everything has to be tactical fad would end.

    • Harold

      Plenty of choices on the web and real world for non-tactical stuff. Exercise your freedom of choice while us tactical wannabees protect your right to do so! Sleep solidly knowing your Citori field grade is safe. Lol jk

      • Alucard

        I wouldn’t ever own a shotgun,for short range I’d use a handgun,any other range I’ll use my AK or Fal.

        • Patrick R.

          So a shotgun has no use?

          • Alucard

            Not to me,maybe to someone else,but if I’m in a shortrange engagement I want to be able to have a hand free and have a weapon thats hard to get out of my hands.