All Products › Canadian Forces C7A Filter Image 1 of 2 Image 2 of 2 Canadian Forces C7A Filter from CA$24.20 sold out Standard issue filter of the Canadian Armed Forces. 40mm Nato thread. Options: Select Options Sealed Out of Package (Capped) Get notified by email when this product is in stock. Sold Out Added! Standard issue filter of the Canadian Armed Forces. 40mm Nato thread. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like GP-7B "ГП-7КБ УНИВЕРСАЛ" Filter from CA$42.35 Sold out USGI M6A2 Chemical/Biological Hood CA$12.10 Sold out Russian GP-21 / PMK-5 Gasmask from CA$205.70 Sold out Canadian Forces C4 Gasmask w/ Kit CA$332.75 Sold out USGI M11 60MM Filter NOS CA$18.15 Sold out