The Silent Steel USA Micro Streamer 5.56 suppressor is the shortest model in the Streamer family at 4.25 inches, finished in Armor Black with a 1.375×24 HUB rear thread (Silent Steel USA part no. MSTR-556-BLK-HUB-1_3/8). Silent Steel USA built it for short-barreled rifles, PDWs and fast-moving setups where a long can gets in the way. It still uses FLOW-IQ technology, a baffle-less turbine and filter module that reduces gas blowback and softens recoil. The maker says it delivers near muzzle-brake maneuverability with significant flash and sound reduction. For a short 5.56 rifle, it adds the least length of any Streamer.

Key Specifications

• The caliber rating is 5.56mm, suited to short-barreled AR-15s and 5.56 PDWs.
• Overall length is 4.25 inches, the shortest of the three Streamer models.
• Diameter is 1.6 inches, the same tube size as the Compact and full-size Streamer.
• The body is 303/304 stainless steel, the material Silent Steel USA uses across the Streamer line for heat and wear resistance.
• The rear interface is HUB-compatible 1.375×24 threads, which accept the maker’s direct thread and BoltLok QD mounting options, with or without a flash hider.
• The module is FLOW-IQ baffle-less with a free-float design that Silent Steel USA says supports precise point-of-impact retention.
• Silent Steel USA lists it as a short-barrel, compact, full-auto rated suppressor.

Frequently Asked Questions

What host is the Micro Streamer built for? Silent Steel USA describes it as ideal for SBRs, PDWs and compact tactical setups, where its 4.25-inch length keeps the rifle short and maneuverable.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Buy the Silent Steel USA Micro Streamer 5.56 Suppressor, HUB Mount, Armor Black

On a short-barreled 5.56, the Micro Streamer keeps the rifle fast and compact. As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Silent Steel USA‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer, and it ships fast to your Class 3 dealer.