Modular Suppressor Shields with Rail Attach Coupler (M-RAC), designed to provide unparalleled performance and protection for your suppressor.
The M-RAC 3.0 boasts a remarkable 20% reduction in weight compared to previous generations. Additionally, it offers increased clearance for suppressors and features stronger engaging threads on the coupler.
Extensively tested and endorsed by multiple military units and federal agencies, this cutting-edge design combines an optimal air gap, efficient venting, and low thermal transfer materials for a staggering 60% reduction in both maximum outer surface temperature and suppressor cool-down time, significantly extending the lifespan of your suppressor compared to traditional fabric-style suppressor covers that trap heat inside your suppressor.
Crafted with a carbon fiber outer hull, our Suppressor Shields are both impact and heat resistant, capable of withstanding suppressor temperatures exceeding 1200°F. This durability ensures reliable performance even in the harshest battlefield conditions.
MODTAC designed the Modular Rail Attach Coupler Suppressor Shield – (M-RAC) to provide a free-float suppressor cover solution for specific rifle forends, including the US Army Special Operations Command’s (SOCOM) Upper Receiver Group Improved (URGI), and Knights Armament URX-4. Please see the fitment guide for more specific model information.
For Large Diameter and Universal Suppressor Shields please see our RAS-XL and U-RAC products
Measurement guide for length of Suppressor Shields with Rail Attach Couplers.
1. Measure from end of forearm to the end of the suppressor.
2. Select the closest part number to this length.
Example Measurement A = 5.9″
Choose part 18B-007-6 (6″ of coverage)
Available Suppressor Shield Lengths
| Part # | Length Coverage (Inches) |
| 18B-007-5 | 5″ |
| 18B-007-55 | 5.5″ |
| 18B-007-6 | 6″ |
| 18B-007-65 | 6.5″ |
| 18B-007-7 | 7″ |
| 18B-007-75 | 7.5″ |
| 18B-007-8 | 8″ |
| 18B-007-85 | 8.5″ |
| 18B-007-9 | 9″ |
| 18B-007-95 | 9.5″ |
The Suppressor Shield with Modular Rail Attach Coupler (M-RAC) are primarily designed for government contracts. M-RAC systems are compatible with ONLY certain MLOK forearms. These forearms currently include:
– SIG MCX – Virtus
– Geissele MK16 and URGI
– Knights Armament Company URX-4 (SR-16 and SR-25)
– Daniel Defense Delta-5 Pro
– Kinetic Research Group Enclosed forend.
– BCM – MCMR
– SIG MCX SPEAR – LT
The MLOK mounting tabs are machined specifically for each of these rails, and are not cross compatible with other similar rails. while they may work on some other brands, we do not guarantee any fitment.
If your Agency, unit or department is interested in the M-RAC system for your specific rail, please reach out to us here.
Hardware
– 6061 Anodized Aluminum hardware provides a strong, light coupler.
– Built-in picatinny rails
What is a suppressor shield?
The materials and design of the MODTAC Suppressor Shields provide a solidly mounted, rigid shield that eliminates mirage, reduces the chance of incidental contact burns on personnel and equipment, as well as allows the suppressor to cool naturally, prolonging the life of your suppressor and your gear.
What makes MODTAC Shields unique?
All MODTAC Suppressor Shields are designed to create a ~1/4″ air-gap around the suppressor, allowing air to naturally flow through and cool the suppressor.
Are Suppressor Shields different than suppressor wraps?
Yes, Suppressor Shields are a rail mounted, rigid, and free floating design which does not retain heat inside of the suppressor, unlike a suppressor wrap.
Temperature Testing
M-RAC Suppressor Shield Temperature Testing
Temperature testing was conducted independently by SFARTAEC Instructors at Ft. Bragg, NC. Equipment: US Army M4 / URGI (11.5″) 5.56mm NATO, Geissele Rail, Surefire SOCOM Suppressor, MODTAC M-RAC Suppressor Shield 2.0
Course of Fire was 10 rounds per minute for 9 minutes (3 mags) totaling 90 rounds, followed by monitoring of temperatures during cool down cycle.
Specifications Sheet - Suppressor Shield Modular Rail Attach Coupler
