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Strike Industries AR Gen 2 Megafins Handguard Rail w/Fins

Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 7in SI-MEGAFINS-G2-07-BK
Strike Industries Handguard Gen. 2, w/Fins, Grey, 7in, SI-MEGAFINS-G2-07-GY
Strike Industries Handguard Gen. 2, w/Fins, Grey, 12in, SI-MEGAFINS-G2-12-GY
Strike Industries Handguard Gen. 2, w/Fins, Red, 12in, SI-MEGAFINS-G2-12-RED
Strike Industries Handguard Gen. 2, w/Fins, Grey, 15in, SI-MEGAFINS-G2-15-GY
Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 7in SI-MEGAFINS-G2-07-BK
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Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 7in SI-MEGAFINS-G2-07-BK
Strike Industries Handguard Gen. 2, w/Fins, Grey, 7in, SI-MEGAFINS-G2-07-GY
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Strike Industries Handguard Gen. 2, w/Fins, Grey, 7in, SI-MEGAFINS-G2-07-GY
Strike Industries Handguard Gen. 2, w/Fins, Grey, 12in, SI-MEGAFINS-G2-12-GY
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Strike Industries Handguard Gen. 2, w/Fins, Grey, 12in, SI-MEGAFINS-G2-12-GY
Strike Industries Handguard Gen. 2, w/Fins, Red, 12in, SI-MEGAFINS-G2-12-RED
4 of 5 images
Strike Industries Handguard Gen. 2, w/Fins, Red, 12in, SI-MEGAFINS-G2-12-RED
Strike Industries Handguard Gen. 2, w/Fins, Grey, 15in, SI-MEGAFINS-G2-15-GY
5 of 5 images
Strike Industries Handguard Gen. 2, w/Fins, Grey, 15in, SI-MEGAFINS-G2-15-GY

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Questions & Answers
Anyone know the inside diameter?? Expert Answer

Internal diameter is 1.36" and with the fin it is 1.24".

by Armando R., Gear Expert, November 19, 2019
does this come with barrel nut, wrench & screws Expert Answer

Yes, the handguard comes with all of the necessary hardware and tools.

by Armando R., Gear Expert, November 19, 2019
View All Q&A You Have a Question? Ask!

Product Discontinued by Manufacturer

Strike Industries AR Gen 2 Megafins Handguard Rail w/Fins has been discontinued by Strike Industries and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the AR15 Accessories, Gun Parts, AR 15 Tactical Rails, AR 15 Parts, Rifle Parts, AR Handguards & Forends, AR15 Upper Parts yourself to try and find the perfect replacement for you!

Product Info for Strike Industries AR Gen 2 Megafins Handguard Rail w/Fins

The Strike Industries Mega Fins G2 hand guard rail is an ultra lightweight handguard with a plethora of features. Our G2 takes everything from the original and jam packs years of knowledge and hours with the product down range. Our Mega Fins G2 rail is named after the "fins" that surround the rifle's barrel. The purpose of these fins is to help dissipate the heat generated from the rifle barrel. With our G2 mega fins we have shorten the fins to be able to easily except larger diameter barrels and low profile gas blocks. The Mega Fins G2 features a full 7 sided (heptagonal) Keymod system. This translates into full placement of rail sections and furniture at every angle. It's truly modular from the ground up! We've taken every step to insure our hand guard is ergonomic and supremely light weight without sacrificing durability or quality. The Mega Fins come is a variety of lengths 12" 12.5" FSP-C for Carbine Length Gas Systems, 13" 13.5" FSP-C for Mid-Length Gas Systems and 15". Whatever your style, whatever your preference, Strike Industries Mega Fins G2 has your covered.image

Package Contents:

  • Strike Industries AR Gen 2 Megafins Handguard Rail with Fins

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Strike Industries AR Gen 2 Megafins Handguard Rail w/Fins Unavailable & Discontinued Models

List of Unorderable Models

  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 7in, SI-MEGAFINS-G2-07-BK , MPN: SI-MEGAFINS-G2-07-BK , UPC: 700598351132 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-07-BK
  • Strike Industries Handguard Gen. 2, w/Fins, Grey, 7in, SI-MEGAFINS-G2-07-GY , MPN: SI-MEGAFINS-G2-07-GY , UPC: 708747543957 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-07-GY
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Red, 7in, SI-MEGAFINS-G2-07-RED , MPN: SI-MEGAFINS-G2-07-RED , UPC: 708747544466 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-07-RED
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 9in, SI-MEGAFINS-G2-09-BK , MPN: SI-MEGAFINS-G2-09-BK , UPC: 700598351149 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-09-BK
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Red, 9in, SI-MEGAFINS-G2-09-RED , MPN: SI-MEGAFINS-G2-09-RED , UPC: 708747544879 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-09-RED
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 10in, SI-MEGAFINS-G2-10-BK , MPN: SI-MEGAFINS-G2-10-BK , UPC: 700598351156 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-10-BK
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 12in, SI-MEGAFINS-G2-12-BK , MPN: SI-MEGAFINS-G2-12-BK , UPC: 700598350388 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-12-BK
  • Strike Industries Handguard Gen. 2, w/Fins, Grey, 12in, SI-MEGAFINS-G2-12-GY , MPN: SI-MEGAFINS-G2-12-GY , UPC: 708747544107 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-12-GY
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 12.5in, SI-MEGAFINS-G2-125-FSP-C-BK , MPN: SI-MEGAFINS-G2-125-FSP-C-BK , UPC: 700598350395 , Code: 3Q-HZ-SIMHR-SI-MGFN-G2-125-FSP-C-BK
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 13in, SI-MEGAFINS-G2-13-BK , MPN: SI-MEGAFINS-G2-13-BK , UPC: 700598350401 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-13-BK
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 13.5in, SI-MEGAFINS-G2-135-FSP-M-BK , MPN: SI-MEGAFINS-G2-135-FSP-M-BK , UPC: 700598350418 , Code: 3Q-HZ-SIMHR-SI-MGFN-G2-135-FSP-M-BK
  • Strike Industries Handguard Gen. 2, w/Fins, Red, 12in, SI-MEGAFINS-G2-12-RED , MPN: SI-MEGAFINS-G2-12-RED , UPC: 708747545326 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-12-RED
  • Strike Industries Handguard Gen. 2, w/Fins, Grey, 15in, SI-MEGAFINS-G2-15-GY , MPN: SI-MEGAFINS-G2-15-GY , UPC: 708747544121 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-15-GY
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 15in, SI-MEGAFINS-G2-15-BK , MPN: SI-MEGAFINS-G2-15-BK , UPC: 700598350425 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-15-BK
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Red, 13in, SI-MEGAFINS-G2-13-RED , MPN: SI-MEGAFINS-G2-13-RED , UPC: 708747544886 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-13-RED
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Black, 16in, SI-MEGAFINS-G2-16-BK , MPN: SI-MEGAFINS-G2-16-BK , UPC: 708747544732 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-16-BK
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Grey, 16in, SI-MEGAFINS-G2-16-GY , MPN: SI-MEGAFINS-G2-16-GY , UPC: 708747544909 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-16-GY
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Red, 15in, SI-MEGAFINS-G2-15-RED , MPN: SI-MEGAFINS-G2-15-RED , UPC: 708747544893 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-15-RED
  • Strike Industries Megafins Gen 2 Handguard Rail With Fins To Dissipate Heat, Red, 16in, SI-MEGAFINS-G2-16-RED , MPN: SI-MEGAFINS-G2-16-RED , UPC: 708747544916 , Code: 3Q-HZ-SIMHR-SI-MEGAFINS-G2-16-RED
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Last updated 2026-08-20 UTC.