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NcStar Keymod Rail System — 4 models

02:29
NcStar Keymod Rail System 6.5IN
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length VMARKMM
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE
NcStar Keymod Rail System 6.5IN
NcStar Keymod Rail System 6.5IN
NcStar Keymod Rail System 6.5IN
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length VMARKMM
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
1 of 1 videos
Vism Drop In KeyMod And M-Lok AR15 Handguards
NcStar Keymod Rail System 6.5IN
1 of 22 images
NcStar Keymod Rail System 6.5IN
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
2 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
3 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
4 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
5 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
6 of 22 images
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length VMARKMM
7 of 22 images
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length VMARKMM
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
8 of 22 images
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
9 of 22 images
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
10 of 22 images
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE
11 of 22 images
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE
12 of 22 images
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE
NcStar Keymod Rail System 6.5IN
13 of 22 images
NcStar Keymod Rail System 6.5IN
NcStar Keymod Rail System 6.5IN
14 of 22 images
NcStar Keymod Rail System 6.5IN
NcStar Keymod Rail System 6.5IN
15 of 22 images
NcStar Keymod Rail System 6.5IN
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
16 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
17 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
18 of 22 images
NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length VMARKMR
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length VMARKMM
19 of 22 images
NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length VMARKMM
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
20 of 22 images
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
21 of 22 images
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE
22 of 22 images
NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length VMARKMCE

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Questions & Answers
Will it fit Ruger 556? Expert Answer

Yes, the short and carbine extended versions should fit, however the Ruger 556 is notoriously tight when changing handguards, so some extra effort or even minor fitment could be needed.

by Ethan C., Gear Expert, June 4, 2018
See 1 More Answer
Which size would be compatible with a Sig M400 with plastic heat shields? Expert Answer

The NcStar Keymod Rail System is a 2-piece drop in handguard designed to fit rifles that use a delta ring and handguard cap. Email us at Techsales@opticsplanet.com for more information.

by Ethan, Gear Expert, October 4, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
excellent handguard by Mario, Verified Owner, November 29, 2020
Es very light, strong and look good installed. I love the way it fit on my AR15. All attachemnt fit perfect on the rails, easy to install and match perfectly with my upper receiver, excellent material and paint, resistant. All arrive as described, i ...
Read More...
1/1 found this helpful
Helpful Positive Review
Excellent Product. Fits Perfectly. by Jim, January 31, 2020
Bought this for my DPMS AR 15. Looks great and fits perfectly! I am pleased with this and the excellent service from Optics Planet. They went above and beyond to accommodate me. Thank you Optics Planet!
1/1 found this helpful
Helpful Positive Review
extended rail with cutout for A sight. by Tony B, Verified Owner, September 28, 2018
I looked all over for a rail system like this.. Prices ranged upwards of $80. I didn't want to pay that amount but saw this one at optic planet for $54.99. So I plunged. I have a SW mp15 sport. The original fore grip was awful. I replaced it...
Read More...
6/6 found this helpful
Helpful Positive Review
13 inch Extended Carbine Guard does fit Rock River LAR-15 Entry Tactical by Jim E, Verified Owner, January 13, 2018
Found out the hard way my new LAR-15 Entry Tactical has a second front swing swivel on the side of the A2 Sight/Gas block. Since there is no cutout for this in the rail system, it would not fit on. Removing the sling swivel required drilling out a ...
Read More...
1/1 found this helpful
Helpful Positive Review
AR-15 Quad Rail by MarioE, August 23, 2016
Solid piece of hardware. This AR-15 Quad Rail is well built. However, is not for piston-driven (e.g. Adams PS) AR-15's. I do however, recommend this quad rail for non-PS, direct-impingement/gas-tube AR-15's.
3/4 found this helpful
Helpful Positive Review
Fills a need. by Hank, August 27, 2017
I bought this for the specific purpose of being able to mount a light at 12 o'clock forward of the sight base on a rifle I'm not allowed to make "permanent" mods to. It works perfectly for that purpose. Not solid enough to mount sights or aiming lase...
Read More...
1/1 found this helpful
Read All 19 Reviews

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Product Info for NcStar Keymod Rail System

Keymod Handguards for the AR15/M4 Platforms.image

Specifications for NcStar Keymod Rail System:

Designed to fit AR15/M4s with: MIL-SPEC Barrel Nut, Delta Ring, and front Handguard Cap.
Length: 6.5"
Weight: 5.9 oz. / 7.9 oz. with both accessory rails attached

Features of NcStar Keymod Rail System:

  • US PATENT PENDING
  • Easy Drop-In install, no special gunsmithing involved, fit into Delta Ring and front Handguard Cap. Remove factory handguard, drop in the KeyMod handguards and use supplied screws to secure KeyMod handguard in place.
  • Solid fit, top rail is at receiver height and you have 7 angles of KeyMod slots
  • Black Anodized Aluminum Construction
  • This model fits: Carbine Length Gas Systems
  • Includes two Accessory KeyMod to Picatinny Rail Sections. One Short (3 KM slots/ 5 slot Picatinny) and one Medium Length (5KM slots/ 11 slot Picatinny) Picatinny Rail sections. They can be placed in any of the 7 angled KeyMod

Package Contents:

  • NcStar Keymod Rail System

Specifications for NcStar Keymod Rail System:

Manufacturer: NcSTAR
Color: Black
Finish: Anodized
Fabric/Material: Aluminum
Gun Make: AR Platform
Gun Model: M4, AR-15
Gun Type: Rifle
Gun Rail: Picatinny
Condition: New
Included Accessories: Short/Medium KeyMod to Picatinny Accessory Rails
Mount Type: KeyMod
Quantity: 1

Package Contents:

  • NcStar Keymod Rail System

NcStar Keymod Rail System Orderable Models

List of Orderable Models

  • NcSTAR Ar15 Keymod Handguard - Carbine Length, Black - VMARKMC , MPN: VMARKMC , UPC: 848754002235 , Code: NC-HZ-CRBNE-VMARKMC
  • NcSTAR Keymod Rail System/Carbine Extended, Black, 13 in Length, VMARKMCE , MPN: VMARKMCE , UPC: 848754002242 , Code: NC-HZ-CRBNE-VMARKMCE
  • NcSTAR Keymod Rail System/Mid Length, Black, 8.5 in Length, VMARKMM , MPN: VMARKMM , UPC: 848754002259 , Code: NC-HZ-CRBNE-VMARKMM
  • NcSTAR Keymod Rail System/Rifle Length, Black, 12 in Length, VMARKMR , MPN: VMARKMR , UPC: 848754002266 , Code: NC-HZ-CRBNE-VMARKMR
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Last updated 2026-08-05 UTC.