The "Pew Science" Hype

The TISHA 5.56 gained massive traction following a Pew Science analysis (late 2025/early 2026), where it achieved unprecedented sound suppression ratings for a suppressor of its length. On an untuned MK18 (10.3" barrel), it reportedly outperformed many full-sized suppressors that are significantly longer and heavier.

Key Features of the TISHA 5.56

Size & Weight: It is only 4.1 inches long and weighs approximately 10.5 oz (in titanium).

Design Influence: The exterior aesthetic is a nod to the Russian Delta Tek flash hiders, giving it a unique "stepped" look.

Mounting: It uses the industry-standard 1.375x24 HUB threads. It typically ships with a Plan B hub and a 2-port muzzle brake.

Material: Currently printed in Grade 5 Titanium, though an Inconel version is scheduled for early 2026 for shooters who need higher heat/full-auto durability.

Low Back Pressure: Despite being remarkably quiet, it uses a complex internal hybrid flow geometry that vents gas forward to reduce "gas face" and bolt speed increase on AR-15 platforms.

Common User Feedback

The "Magic" Performance: Most reviewers are shocked that a 4-inch "K-can" can sound like a full-size suppressor. It is currently being called the "MK18 king" for its ability to tame the harsh blast of short-barreled rifles.

The "Sparks": Early reviews noted that, like many titanium suppressors, it can produce some "sparking" (visible titanium particles burning off), especially during the first few hundred rounds or in low-light conditions.

The Build Quality: Since it is 3D-printed, it is a sealed unit. Users emphasize that while it's "hard-use" rated, titanium has a lower melting point than Inconel, so you shouldn't run "meltdown" style drills with the Ti version.

Technical Specs

Bore: Rated for all 6mm calibers and below (5.56 NATO, .223, 6mm ARC, 6mm Creedmoor).

Full Auto Rating: Yes, but the manufacturer requires using a muzzle brake (not direct thread) for high rates of fire to act as a sacrificial baffle.