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DETAILS

The Otter Creek Labs Polonium-K 5.56 Suppressor is a compact, lightweight NFA suppressor built for short-barreled 5.56 rifles and pistols. Machined from H900 heat-treated 17-4 stainless steel in a fully welded, tubeless design, it is full-auto rated and delivers strong sound and flash reduction in a 4.8″ package. FFL and SOT transfer required.

Specifications

  • Caliber: 5.56 NATO / .223 Rem (also 6mm ARC, 6 Creedmoor, 6 Dasher, .243 Win)
  • Length: 4.8″
  • Weight: 11.5 oz (without mount)
  • Diameter: 1.625″
  • Construction: H900 17-4 stainless steel, tubeless CNC-welded
  • Finish: Cerakote (Black)
  • Mount: 1.375×24 HUB; includes 1/2×28 direct-thread adapter
  • Full-Auto Rated: Yes
  • Minimum Barrel Length: 7.5″
  • Warranty: Lifetime
  • NFA Item: Yes – Tax stamp required
  • FFL Transfer: Required

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Description

The Otter Creek Labs Polonium-K 5.56 Suppressor is a compact, lightweight NFA suppressor built for short-barreled 5.56 rifles and pistols. Machined from H900 heat-treated 17-4 stainless steel in a fully welded, tubeless design, it is full-auto rated and delivers strong sound and flash reduction in a 4.8″ package. FFL and SOT transfer required.

Specifications

  • Caliber: 5.56 NATO / .223 Rem (also 6mm ARC, 6 Creedmoor, 6 Dasher, .243 Win)
  • Length: 4.8″
  • Weight: 11.5 oz (without mount)
  • Diameter: 1.625″
  • Construction: H900 17-4 stainless steel, tubeless CNC-welded
  • Finish: Cerakote (Black)
  • Mount: 1.375×24 HUB; includes 1/2×28 direct-thread adapter
  • Full-Auto Rated: Yes
  • Minimum Barrel Length: 7.5″
  • Warranty: Lifetime
  • NFA Item: Yes – Tax stamp required
  • FFL Transfer: Required

Brand

Otter Creek Labs

Otter Creek Labs was started by us, co-owners Andrew and John in 2020 officially, although the design and planning process started before that.  Back then, we utilized John’s garage for manufacturing and Andrew’s for welding and shipping. The company was named in honor of Andrew’s grandfather, who passed away around the time we started the company – he went to the Otter Creek school located in Otter Creek, Kentucky and was frequently seen wearing a hat with the words “Otter Creek” on it. Initially, we were introduced by a mutual friend. We enjoyed making our own suppressors for personal use with the ATF Form 1 system, and made a business out of it via Quell Tech using jigs and tools. We both love shooting and whenever we went to a match or the range, people always asked us what suppressors we were using because they sounded awesome. We always replied, “ones that we made ourselves”.

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