Spiro
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Spiro

$995.00

TBAC’s low back pressure, full-auto rated gas-gun suppressor in Haynes 282. Dedicated 5.56/.223 or 6mm/.243 versions; direct thread, HUB or SR v2 mount. 5.9 in, 15.5 oz. MSRP from $995.

Questions, or prefer to place a deposit by phone? Call or text (844) 289-1911 or email hello@precisionshooting.us.

SKU: TB-SPIRO Category: Brand:
Order to build · 7–10 weeks + ATF time
Dealer transfer · Form 447321+NFA item · ATF Form 4WA pickup or ship to your dealer

The SPIRO is a low back pressure gas-gun suppressor with excellent sound suppression at both the muzzle and the shooter’s ear. The 5.56 SPIRO raises back pressure gas flow only about 50% over a bare muzzle (3X less than a Dominus-SR) and the Mk18 cyclic rate by about 5%, while cutting recoil roughly 40%.

Made from Haynes 282, a nickel super alloy stronger than Inconel 718 that runs about 500 F hotter; rated for over 20 cycles of the 8-mag SOCOM SURG test on an 8 in barrel. Dedicated 5.56mm/.223 version (1/2-28 DT) or 6mm/.243 version for 6 ARC, .243 Win and 6 Creedmoor (5/8-24 DT); HUB and SR v2 versions available. No mount is included with the HUB version.

  • Caliber rating: .223/5.56 up to .22 Creedmoor (5.56 version); .243 Win / 6 Creedmoor (6mm version)
  • Length: 5.9 in (adds 5.3 in, DT)
  • Diameter: 1.8 in
  • Weight: 15.5 oz
  • Mount: Direct thread, HUB, or SR v2 (+$500)
  • Threads: 1/2-28 (5.56) or 5/8-24 (6mm)
  • Material: Haynes 282; black Cerakote
  • Full-auto rating: Extreme duty / full auto (8 in min. barrel for 5.56)
  • Warranty: TBAC Limited Lifetime

Sold to order by Precision Shooting LLC, an authorized TBAC dealer; MSRP is for the base configuration (direct thread or HUB). NFA suppressor transferred on ATF Form 4 through Precision Shooting LLC (Type 07 FFL / Class 2 SOT); the federal transfer tax has been $0 since January 2026.

Caliber rating

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Mount

Thread pitch

Material

Barrel length

How you'll receive it

Ordered to build: your card is charged at checkout and we place the order on our dealer allocation the same day. Call us if you would rather reserve it with a deposit and pay the balance before transfer.

  • Pick up in Lake Stevens, by appointment (Washington residents). Federal Form 4473, the Washington application and proof of firearm-safety training at your first visit; we submit the state background check ($36). Washington requires ten business days from that request before any firearm is handed over.
  • Ship to your dealer in any state where this item is legal, free of charge. Your dealer emails us a signed copy of their licence (27 CFR 478.94); we match it against ATF's FFL eZ Check before it ships. Their transfer fee and state rules apply at pickup.
  • NFA item. Washington buyers: we file the ATF Form 4 with you here (passport-quality photo; fingerprints on cards or digital capture, $50 optional; individual or trust). Out-of-state buyers: it goes to your SOT dealer on a Form 3 and they file your Form 4. The federal transfer tax on suppressors has been $0 since 1 January 2026; our NFA transfer fee is $125.

Status of an order or build: call or text (844) 289-1911 or email hello@precisionshooting.us. We also email you when a build starts.

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