Due to the demand and dedication we put into every order, please allow 4-6 weeks for SIEGE to ship your suppressor. We promise it will be worth the wait!
This is an NFA item and it must be transferred to your preferred FFL & SOT. Please email the FFL & SOT you would like to use for transfer along with your order number to: info@siegesuppressors.com
ABOUT THE ROC556L:
The ROC556L by Siege Suppressors uses Linear Diffuser Array technology.
Video - What happens inside of the Linear Diffuser Array? https://www.youtube.com/watch?v=II-aLNxDYxc
The ROC556L is built around a very high flow rate achieved by SIEGE’s patented Linear Diffuser Array, which pushes gases, unburnt powder, and other particulate matter forward through a sequence of flow cells so they exit cleanly at the muzzle. That high flow rate keeps gas-operated rifles cycling naturally with less tuning required and directs contaminants downrange instead of back into the action or the shooter’s face. The result is consistent, quiet shooting with no cleaning or disassembly needed, and every ROC556L is bonded into a single monolithic structure for exceptional strength, erosion resistance, and long service life.
SPECS:
Caliber: 5.56mm
Length: 7.70”
Length w/o mount: 7.45"
Diameter: 1.5”
Weight: 18.06 oz
Materials: Precipitation Hardening SS & Inconel Linear Diffuser Array
Finish: Nitride
Full Auto Rated
No Barrel Length Restrictions
WHATS IN THE BOX:
ROC556L Suppressor
2 - Siege Spanner wrenches
Siege OMNIHEX Direct Thread Mount
5.56mm vented removable endcap
4 reviews for ROC556L - Includes: 1/2x28 Direct Thread Adapter
Josh Smith
Apr 28, 2025Phenomenal suppressor! The technology is out of this world, I’ve shot a lot of 556 cans and I’d argue this one being one of the quietest out there. No blowback, no flash , sounds great ! Highly recommend.
Camron H Branom
Jan 29, 2025An outstanding suppressor. No gas to my face when I used it on my SOLGW 13.9. The tone is awesome. One of the best suppressors I used.
Jason W.
Jan 13, 2025This suppressor is outstanding. Shipping was fast, and right out of the box this can performed exceedingly well! Minimal zero shift, and the performance expectations followed through on every other category. It has a smooth recoil impulse as well as minimal gas back to the chamber/my face, when shooting. I could tell the difference between shooting this against baffled suppressors and for my needs as a user, I prefer how this can performs when the finer points of cleanliness and design are considered. I am looking forward to what else Paul and his team will be bringing to market. This is definitely a game changer. Their commitment to quality and top tier customer service is an added bonus!
JASON W
Dec 24, 2024This suppressor is a HUGE upgrade! Reduced back pressure, smooth recoil impulse and a noticeable reduction in gas getting back to the mag/my face. Held zero just fine as well. Its also not too bulky and is the first of more Siege cans that I will be purchasing. The customer service is top notch and kudos to you guys at Siege for bringing such a great product to market!
