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Questions & Answers
Would this fit the SIG 551-A1? Expert Answer

No. The Samson SIG 556 Rails - STAR-556 Rail is only compatible with the Sig 556, 556 Classic and 556R.

by Ethan, Gear Expert, February 4, 2022
Will this fit SG751 SAPR? With or without modifications Expert Answer

No, the Samson SIG 556 Rails are only compatible with the Sig Sauer 556, 556 Classic and 556R.

by Ethan, Gear Expert, August 25, 2022
Customer Reviews
Helpful Positive Review
Honest Review by Yura Krutovich, March 4, 2015
I bought the rail to give the gun a more "modern" look and feel. Accuracy, was said to improve after installing this rail, after reading online forums. Well, that was not at all the case. In my case, accuracy suffered about 50-75% loss with various a...
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2/3 found this helpful
Helpful Positive Review
A lot better than what I was expecting. A+ by P1245678, November 8, 2015
..........................100% perfect. Easiest install........... ..........200 characters for a review. Is the down fall of this site's review system. Love the rails, hating this 200 characters, forced minimum, for a review. 231.
3/3 found this helpful
Helpful Positive Review
perfect fit by Legacy Reviewer, January 3, 2011
Great modification to my Sig 556. Pros: easy of install and look Cons: some edges are a little sharp
1/1 found this helpful
Helpful Positive Review
Samson Sig 556 rail by Legacy Reviewer, Verified Owner, November 25, 2010
I took the plastic rail off my Sig and install these. Now, my gun looks like a Socom II. I'm thrilled. It's easy to instqll. It takes longer to open the box than to install! Pros: easy to install.
1/3 found this helpful
Helpful Negative Review
Samson SIG 556 Rails - STAR-556 Rail 3 Hole by Elvis, Verified Owner, October 16, 2025
If you want a rail, you can't even use this is the perfect rail for you! Came with stripped threads, misaligned holes and holes that were halfway missing. Contacted Samson directly all I got was broken promises and lies. 45 days later no new rail ...
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1/1 found this helpful
Most Recent Reviews
I really wanted to like it. by Enderwon, April 6, 2014
I chose the Samson over the Troy rail because of availability, big mistake. The rail is not standard 1913 mil spec size. Its slightly too large, which means accessories that clamp on to the rail fit, but plastic accessories like LaRue Index Clips and...
Read More...
3/3 found this helpful
Read All 9 Reviews
2 Models Available
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Product Info for Samson SIG 556 Rails - STAR-556 Rail

Samson Tactical Accessory Rail System for Sig 556 adds multiple rails to your SIG 556 assault rifle. With four 1913 mil spec rails, the two-piece Samson SIG 556 STAR features solid scope mounting for laser scopes, weapon lights, and any other shooting accessories you need. The rifle scope mounting base has a continuous 19 inch top rail. This lightweight Samson Scope Mount gives you a variety of mounting options with multiple scope rails in a single rail mount to mount many accessories at once. NOTE: the Model Number corresponds to the number of mounting screws on the top of the Sig 556.image

Available models of Samson STAR Sig 556 Rail :

  • STAR-SIG-556-3H: Samson Tactical Accessory Rail System for Sig 556 - 3 Hole
  • STAR-SIG-556-4H: Samson Tactical Accessory Rail System for Sig 556 - 4 Hole

Our online store has a superb selection of shooting accessories from Samson and other leading manufacturers. Our range of gun supplies includes rifle scope mounts, scope rings and scope bases including tactical rails, scope mounting rings, front sights and rear sights. We carry high-powered pistol scopes, red dot sights, laser sights and tritium night sights. Our list of gun accessories includes carrying cases for gun storage, gunsmith tools, and more. Everything in our online store is backed by the manufacturer's warranty and our own guarantee of 100% satisfaction with your purchase!

WARNING: California`s Proposition 65

Specifications for Samson Tactical Accessory Rail System for Sig 556 Rifle:

Material: 6061 T-6 Aluminum
Finish: Mil spec black hard coat anodized

Features of Samson Tactical Accessory Rail System for Sig 556:

  • 19" continuous top rail.
  • Three additional Mil Spec Rail Mounts
  • Solid mounting
  • Lightweight
  • Two piece

Package Contents:

  • Samson Tactical Accessory Rail System for Sig 556

Samson SIG 556 Rails - STAR-556 Rail Orderable Models

List of Orderable Models

  • Samson Weapon Mount Rails, Black for Sig 556, 3 Holes , MPN: STAR-SIG-556-3H , UPC: 855359005080 , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-3H
  • Samson Weapon Mount Rails, Black for Sig 556, 4 Holes , MPN: STAR-SIG-556-4H , UPC: 855359005097 , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-4H

Samson SIG 556 Rails - STAR-556 Rail Unavailable & Discontinued Models

List of Unorderable Models

  • USED, Samson Weapon Mount Rails, Black for Sig 556, 3 Holes , MPN: STAR-SIG-556-3H-EDEMO , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-3H-EDEMO-IN-D
  • USED, Samson Weapon Mount Rails, Black for Sig 556, 4 Holes , MPN: STAR-SIG-556-4H-EDEMO , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-4H-EDEMO-RE-C
  • USED Samson Weapon Mount Rails, Black for Sig 556, 4 Holes, EDEMO1, Condition Fair, Other , MPN: STAR-SIG-556-4H-EDEMO1 , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-4H-EDEMO-OT-D
  • USED Samson Weapon Mount Rails, Black for Sig 556, 4 Holes, EDEMO3, Used, Condition Like New , MPN: STAR-SIG-556-4H-EDEMO3 , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-4H-EDEMO3
  • USED Samson Weapon Mount Rails, Black for Sig 556, 4 Holes, EDEMO2, Used, Condition Like New, Inspect and Rebox , MPN: STAR-SIG-556-4H-EDEMO2 , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-4H-EDEMO-RE-A
  • USED Samson Weapon Mount Rails, Black for Sig 556, 3 Holes, EDEMO4, Used, Condition Like New , MPN: STAR-SIG-556-3H-EDEMO4 , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-3H-EDEMO4
  • DEMO, Samson Weapon Mount Rails, Black for Sig 556, 4 Holes , MPN: STAR-SIG-556-4H-DEMO , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-4H-DEMO
  • DEMO, Samson Weapon Mount Rails, Black for Sig 556, 3 Holes , MPN: STAR-SIG-556-3H-DEMO , Code: OI-FO-SIG556RIFLE-STAR-SIG-556-3H-DEMO
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