Griffin Armament – DUAL-LOK® HRT-556™ G2 Suppressor

Initially designed for elite HRT unit’s, Griffin Armament’s HRT-556™ model is the shortest addition to the DUAL-LOK® family of suppressors. The latest version HRT-556™ G2 Suppressor features an improved low-profile flash hider endcap that works in conjunction with the ECO-FLOW™ baffle stack to reduce gas backpressure and improve cyclic performance of the host firearm. Other notable improvements incorporated into the HRT-556™ G2 include an improved, lower backpressure ECO-FLOW™ baffle stack, and a thicker blast baffle to increase durability vastly over the already incredibly robust G1 HRT-556™. 

The HRT-556™ features the patent pending DUAL-LOK® mounting system, an accurate, robust, reliable, and wear free system with robust muzzle device support.  The suppressor itself was designed to have minimal flash signature, POI shift, and gas blow back, coupled with maximum strength, durability, and high sound signature reduction performance.  

Baffle technology for this product is linked to a recent Griffin patent and aggressive 4 month R&D program, and a second high durability R&D program targeting reduction of cyclic rate increase, making the suppressor host firearm operating system more reliable and less affected by the suppressor, reducing the contamination of breathing air in the vicinity of the operator’s face compared to previous technology.  The patented low profile flash suppressing end cap further adds performance to the low flash baffle system. 

DUAL-LOK® suppressors are machined in Griffin’s Watertown Wisconsin facility by freedom loving Americans.

This suppressor is NOT compatible with the DUAL-LOK® Stealth Flash Suppressor (2.75″) or the DUAL-LOK® Bayonet Flash Hider. 

MOUNTING OPTIONS AVAILABLE

• DUAL-LOK® Minimalist Brake 5.56mm included
• DUAL-LOK® Minimalist Brake Titanium (6AL4V) 
• DUAL-LOK® Minimalist Stealth Flash Suppressor
• DUAL-LOK® Bayonet Micro Brake
• DUAL-LOK® 2 Port Paladin Brake
• DUAL-LOK® Tactical Compensator
• DUAL-LOK® Stealth Flash Suppressor (2.25″)

KEY FEATURES

• Utility patents pending

• Wear free mounting system, requires no consumable parts

• Taper lock interface ensures security and accuracy

• ACME thread provides speed of attachment

• Locking ring incorporates 3 anti-rotation teeth to eliminate inadvertent loosening

• 120 effective positions ensure a rock-solid suppressor mount and provide extremely low POI shift

• 17-4 stainless steel & 718 Inconel

• Traditional Tube Design with internal flash hiding characteristics

• Patent pending ECO-FLOW™ baffle system for reduced blow back

• Patented flash reducing end cap

• DUAL-LOK® Minimalist Brake 1/2×28 5.56mm (.22 cal) Included

• ¾” wrench flats on muzzle devices

• Collar Nitrided for increased surface hardness, corrosion, and wear resistance

• Suppressor body H900 heat treated 
• Available in Black or FDE Cerakote Finish
• Perpetual™ Lifetime Warranty
• dB Rating –  (136.7dB) 11.5″ Griffin MK1, (134.6dB) 16” Griffin MK1
• Finish – High Temp Cerakote
• Full Auto Rated – Yes
• User Serviceable – No

CALIBER RATING

The DUAL-LOK® HRT-556™ suppressor is rated up to .22-250 REM.

WHAT’S IN THE BOX

• DUAL-LOK® HRT-556™ (.22 cal) suppressor
• DUAL-LOK® Minimalist Brake 1/2×28 5.56mm (.22 cal) included
• Branded Griffin pouch
• DUAL-LOK® HRT 556™ Manual

RESTRICTIONS

DUAL-LOK® HRT-556™ suppressors do not have minimum barrel length restrictions or constraints for rifle calibers. While longer barrels promote longer service life, there are no barrel length restrictions with this suppressor!

IF YOU’D LIKE A FREE PRIVATE DEMO OF ANY OF OUR AVAILABLE SUPPRESSORS, PLEASE REACH OUT TO US TO SCHEDULE A DATE AND TIME. CLICK HERE

A $205 NFA TAX STAMP IS NECESSARY TO COMPLETE THE ATF FORM 4 PROCESS. PLEASE SELECT THE NFA TAX STAMP OPTION HERE, ONE STAMP REQUIRED PER SUPPRESSOR.