Today’s Topics:

1. Sound Signature Review 6.240 – Otter Creek Labs Infinity 556K on the 14.5-in 5.56 M4. OCL Infinity technology is one of the most characterized in the research. The technology was shown to scale with barrel length in the .30 caliber bore size. What happens with the dedicated bore 556K on the M4? Technical discussion of last week’s report and tone study. (00:06:25)

   a. Short re-intro and overview of the Infinity 556K (00:10:30)

   b. Infinity 556K MK18 and M4 performance differentials (00:12:54)

   c. Members-Only Tone Study (00:17:21)

   d. Infinity 556K Hazard Maps in Silencer Hazard Map Brief 8.1.37 (00:22:05)

   e. Performance Comparisons and Overall thoughts (00:26:59)

2. Sound Signature Review 6.241 – Tuna Cans Blackfin XL 12-baffle and 9-baffle on the 300 BLK subsonic bolt-action rifle. The economy evaluations continue – we first evaluated this stepped cone design on the 5.56 M4. How does this type of baffle perform with much lower pressure? And as a .375 caliber silencer, does over-bore induce performance loss? And what about FRP? Intro to today’s double-header report. (00:40:56)

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