MODTAC designed the Universal Rail Attach Coupler Suppressor Shield – (U-RAC) to provide a free-float suppressor cover solution to the majority of standard forend’s with top picatinny rails. Top picatinny rail systems maintain a standard height over bore, which allows the Suppressor Shield to be centered over the suppressor in a free-float configuration. Please check the fitment guide to see if your forend is compatible.
Our second generation of Suppressor Shields are designed to be completely free floated over the barrel and suppressor. This accomplished two objectives. First, it reduces the amount of heat transferred from the rifle suppressor to the outer surface of the shield. Two, it allows for a truly zero impact shift when attaching to a rifle. Additionally having zero contact between the suppressor and the shield, reduces hot spots seen on previous generations where the thermal transfer rate was high in certain areas.
The MODTAC U-RAC 2.0 Suppressor Shield now makes use of the previously un-used space where the picatinny rail mount is located. Since paring up with Unity Tactical © the U-RAC 2.0 mount has been slotted for the Fusion flip-up front sight. Now this space is no longer wasted.
These improvements only add to the successful design of the original clamp on suppressor shield which has proven to be vastly effective and still very popular around the world.
This design has been tested and reported on by agency after agency and continues to show that about ¼” of air gap surrounding the suppressor allows air to flow in the bottom vents, and out the ends of the shield allowing for nearly 50% reduction in both cool down time and in max outer surface temperature. These lower temperatures will lengthen the life of your suppressor, compared to being kept hot with a fabric style suppressor wrap.
The carbon fiber rigid outer hull is both impact and heat resistant, allowing for a drastic reduction in temperature for hot suppressors up to or exceeding 1000 Degrees F, while being able to take the hard abuse that weapons see on the battle field.
The U-RAC 2.0 is a great option for every day shooters, law enforcement officers, soldiers, operators and government agencies who are using suppressors and see the harsh but inevitable effects of a hot suppressor.
MODTAC independent testing utilized commercially available tools to identify the measurable difference between suppressor temperature and the outer surface of the Suppressor Shield (Performance Capability) of the free-float version of the Suppressor Shield.
U-RAC Suppressor Shield length Selection
Measure length (A) shown on image above. [Front front of forearm/rail to end of suppressor]
Note: We recommend the Suppressor Shield be shorter rather than longer than the suppressor if the measurement comes out in between sizes.
Take length (A) and subtract 3/4″ for the total width of the coupler.
Suppressor Shield length = (A) – 3/4″
|“A” length (in)||Suppressor Shield
|5.50 – 6.00||4.75||18B-004-4752|
|6.00 – 6.75||5.50||18B-004-552|
|7.00 – 7.75||6.25||18B-004-6252|
|7.75 – 8.00||7.00||18B-004-72|
For (A) measurements longer than 8.00” please contact us at firstname.lastname@example.org
|Weight (oz)||Vent Options|
- Standard Venting – The “standard” vent design is optimized to deliver maximum mirage reduction while enabling air flow from the below the suppressor, up and around the suppressor body to encourage natural cooling.
- CQB Venting – Our CQB vent design focuses less on mirage reduction and more on protecting the operator. By increasing the amount of hot air that can escape, the CQB vent design promotes faster cooling while still offering maxmimum burn protection.