Communications and Public Safety Equipment Since 1992

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Defense Technologies First Defense MK-4

The 3 oz. MK-4 canister will deliver 20-25 short bursts of OC at an effective range of 10-12 ft. The MK-4 is an ideal size for patrol officers to wear on a duty belt. This formulation has been tested and is non-flammable and Electronic Discharge Weapon (EDW) safe. Defense Technology First Defense OC Aerosols are produced in an ISO rated manufacturing facility. All Major Capsaicinoid percentages (MC%) are verified by an Independent Laboratory for quality assurance.
Country/Region of Origin: United States of America

Please note if items not instock, backorders are typically filled within 2-4 weeks but we suggest you contact us for an ETA prior to backorder.
  • We highly recommend contacting us before placing an order for items that are not in stock to ensure timely delivery. Our team will do our best to assist you in finding alternative solutions or providing accurate lead times for backordered items. 
  • Stock levels shown include Dothan and our shipping warehouse, if in stock it normally will ship within a couple of days from the Dothan location or the Drop Ship Warehouse, at times we also drop ship direct from the manufacturer which could take longer to process the order.
  • Local customers please contact us prior to coming for pickup, to allow time for verification and processing. A sales rep will be in contact to confirm the order.
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