PTR VENT Spiritus 5.56i

PTR VENT SPIRITUS 5.56I SUPPRESSOR - 3D-PRINTED INCONEL 5.56 SILENCER WITH PIP TECHNOLOGY, HUB MOUNT

The PTR VENT Spiritus 5.56i is a monolithic 3D-printed Inconel suppressor built around PTR's Purposely Induced Porosity (PIP) lattice structure. PIP controls gas flow differently than conventional baffle designs, reducing backpressure and carbon blowback into the rifle's action. At 15.2 ounces without mount and 6 inches long, the Spiritus 5.56i covers 5.56x45mm, 5.7x28mm, and 4.6x30mm with a 10.5-inch minimum barrel length. HUB 1.375x24 rear threading gives access to the full range of QD adapters on the market, and a 1/2x28 direct thread adapter is included. PEW Science independently verified suppression ratings of 37.5 on a 10.3-inch barrel and 44.2 on a 14.5-inch barrel using Federal XM193. DLC finish throughout. If you are looking for a compact, lightweight 5.56 suppressor with verified performance data and universal mounting flexibility, the Spiritus 5.56i is built for that role.

CAPITOL ARMORY'S OPINION

The PIP lattice structure is not just a marketing distinction. Conventional baffle suppressors slow gas down by bouncing it through chambers. PIP manages gas flow through a porous internal structure, which is how PTR achieves the backpressure and blowback reduction numbers they are claiming. On short-barreled AR platforms where gas blowback is already an issue, that difference is something you will actually notice in how the gun runs suppressed.

The PEW Science data is worth paying attention to here. A suppression rating of 37.5 on a 10.3-inch barrel is a great result for a suppressor this size and weight, and having that number verified by independent testing rather than manufacturer-stated specs gives you a real benchmark to compare against other options in this category. At 15.2 ounces, the Spiritus is light enough to run on SBR and carbine builds without throwing off balance, and the 6-inch length keeps the overall package manageable. The full-auto rating of 120 to 180 rounds in bursts with a cooldown is appropriate for the Inconel construction and realistic for most use cases outside of dedicated mag-dump sessions.

FEATURES

• Monolithic 3D-printed Inconel construction with PTR PIP (Purposely Induced Porosity) lattice structure
• Multi-caliber rated: 5.56x45mm, 5.7x28mm, and 4.6x30mm
• PEW Science verified: 37.5 suppression rating on 10.3" barrel, 44.2 on 14.5" barrel (Federal XM193)
• HUB 1.375x24 rear threading for universal QD mounting compatibility
• Limited full-auto rated: 120 to 180 rounds in bursts with 10-minute cooldown
• 15.2 oz without mount, 17.8 oz with 1/2x28 adapter
• 6" length, 1.625" diameter
• 10.5" minimum barrel length
• DLC (Diamond-Like Carbon) finish

WHAT'S INCLUDED

• PTR VENT Spiritus 5.56i Suppressor
• 1/2x28 Direct Thread Adapter
• Protective Hard Case
• PTR Sticker

COMPATIBILITY

• HUB Direct Thread Mounts: Dead Air, SilencerCo, Energetic Armament, YHM
• SilencerCo Bravo ASR
• Plan-B by Q (HUB)
• Dead Air Key-Mo (HUB), Dead Air Xeno
• Griffin A2 Adapter, Plan A, Dual-Lok
• YHM Kurz QD Adapter, Phantom QD Adapter