Griffin Armament DUAL-LOK HRT Series
The Griffin Armament HRT (Hostage Rescue Team) series represents the extreme hard-use tier of Griffin's DUAL-LOK® suppressor family. Originally designed for elite HRT and special forces units, both the HRT-556™ and HRT-762™ emphasize short-sprint durability, minimal flash signature, minimal POI shift, and minimal gas blowback — without sacrificing sound performance. Both use the patent-pending DUAL-LOK® mounting system, an active-retention QD interface that is wear-free, ratchet-free, and requires no consumable parts. Compatible with all DUAL-LOK® muzzle devices. No barrel length restrictions.
HRT-556 vs. HRT-762
Model | Caliber | Weight | Notes |
DUAL-LOK HRT-556 | 5.56mm / .22 cal | Compact — shortest in the DUAL-LOK family | ECO-FLOW™ baffles (G2); improved flash hider end cap; thicker blast baffle vs. G1 |
DUAL-LOK HRT-762 | .30 cal up to .300 Win Mag | 18.9 oz | Builds on HRT-556 platform; rated to .300 Win Mag; MSRP ~$1,045 |
Shared Specifications
Mounting | Patent-pending DUAL-LOK® — active retention QD; wear-free; no ratcheting parts; compatible with all DUAL-LOK muzzle devices |
ECO-FLOW™ Baffles | Reduces backpressure and gas blowback; improves cyclic performance on semi-auto hosts |
Min Barrel Length | No restrictions |
Full Auto Rated | Yes |
Manufacture | CNC machined in Watertown, WI |
Key Features
Designed for elite HRT and special forces units — the HRT tier prioritizes short-sprint durability above all else
DUAL-LOK® active retention: the industry's most rigorous QD system; no ratcheting wear; requires no consumable parts
HRT-556 G2: improved ECO-FLOW baffle stack, thicker blast baffle, improved flash-hider end cap — meaningful durability and performance gains over G1
HRT-762: same platform architecture as HRT-556 extended to .30 cal / .300 Win Mag; 18.9 oz
DUAL-LOK family hierarchy: DUAL-LOK 5/7 = everyday use; HRT = extreme hard use; PSR 5/7 = precision accuracy