Polish FP-5 Filter Test, Works with a GP-5!

Testing the Polish FP-5 filters made by MASKPOL, basically a CBRN filter in a standardised 40mm thread that fits both NATO and GOST masks, meaning yes you can use this filter and it works with a GP-5! Amazing.
After the fall of Communism, Poland wanted to adopt a new 40mm NATO mask, the issue being all of their old masks from the Warsaw Pact era took 40mm GOST filters, so MASKPOL came up with a normalised/standardised filter. These filters are known as RD40x1/7" Meaning they are the standard RD40/NATO STANAG 40mm filter but with a 1/7" thread twist/thickness that works with GOST filter intake screws.
Prior to using this FP-5 filter I had used MASKPOL's earlier AB2E1P3 filter that had a similar normalised thread.
If you want to buy one of these filters you can get them from Beastoree.
https://www.ebay.co.uk/usr/beastoree?_trksid=p2047675.l2559

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Видео Polish FP-5 Filter Test, Works with a GP-5! канала Weaponsandstuff93