MODTAC U-RAC SUPPRESSOR SHIELD WITH RAIL ATTACHMENT Premier Personal Protection Accessory for suppressors up to 1.70" in diameter. Suppressor Shield - Advanced Suppressor Cover Prevent Burns. Eliminate Mirage. Mitigate Risk. This size Suppressor Shield will not work on suppressors larger than 1.700". Please see the U-RAC XL to accommodate larger bodied suppressors. The U-RAC Suppressor Shield delivers superior suppressor protection while maintaining minimal weight. Designed for extensive compatibility, it integrates with standard AR-15 rails using a Picatinny rail grabber that also supports the Unity Tact Mfg: Modtac