SIEGE ROC556L

For a LIMITED TIME ONLY, a Free tax stamp included with purchase of this product through Silencer Shop’s website. (Please note dates are subject to change based on inventory). The tax stamp will automatically be added to your order after checkout.

Please Note that if the product is backorderable, you can still place a backorder during the promotional time frame to take advantage of this offer. Your free tax stamp will be applied when your order is filled.

The Siege ROC556L brings an exceptional level of suppression to your firearm, skillfully blending innovative engineering with meticulous attention to detail. Distinguished by its seamless, contemporary exterior crafted through proprietary manufacturing processes, the ROC556L is designed to deliver elite sound attenuation, reduced flash signature, and minimized back pressure. Its sophisticated internal architecture ensures consistent performance, reduced maintenance, and unmatched durability, making it perfect for rigorous tactical missions, precision shooting sports, and dedicated recreational use.

• Innovative Diffuser Array Technology: Provides superior suppression and effectively redirects gases to minimize both noise and visible flash.
• Maintenance-Minimizing Design: Unique internal cell geometry ensures reduced fouling, significantly easing long-term maintenance.
• Universal Mounting Versatility: Offers compatibility with both Direct Thread and Siege’s Stronghold Quick Detach (QD) adapters, featuring the versatile 1.375x24 HUB mount.
• Robust Monolithic Construction: Enhanced resistance to erosion and wear, built from premium materials for consistent reliability and extended service life.
• Lifetime Assurance: Siege’s lifetime warranty underscores the ROC556L’s exceptional quality and enduring performance.

• Length:
  • w/ DT Adapter: 7.20"
  • w/ Stronghold Adapter: 7.45"
• Weight:
  • w/ DT Adapter: 18.70 oz
  • w/ Stronghold Adapter: 18.83 oz
• Diameter: 1.5”
• Material: Premium Stainless Steel and Aerospace-grade Alloys
• Finish: Matte Black Cerakote
• Barrel Length Restrictions: None

ROC556L Suppressor

2 - Siege Spanner wrenches

Siege OMNIHEX Direct Thread Mount

5.56mm vented removable endcap

1. Add the SIEGE Suppressors ROC556L to your cart. Make sure to include a tax stamp for each item and a Single Shot Trust if applicable. The Single Shot Trust makes it easy to add friends and family as additional users of the suppressor.
2. Head to your selected Powered By Silencer Shop dealer with a kiosk to complete your demographic and fingerprint scan in just five minutes. Snap a selfie and upload it online within your customer portal with the Silencer Shop app.
3. Silencer Shop will email an electronic document to you. Please review and digitally sign the file from your computer or mobile device.
4. Set up your ATF eForms account at eforms.atf.gov. Make sure your email, name, and address match your Silencer Shop profile information exactly.
5. You'll receive an email from Silencer Shop that says "Ready to Certify" and includes the phone number of your local Powered by Silencer Shop dealer. Set up a time to certify with your dealer and submit the form to the ATF for processing.