{"product_id":"wwii-20mm-dummy-round-dps-1943-m21a1b1-inert-training-cartridge","title":"WWII 20mm Dummy Round – DPS 1943 M21A1B1 Inert Training Cartridge","description":"\u003cp data-start=\"137\" data-end=\"443\"\u003eOriginal U.S. WWII-era 20mm dummy round, headstamped \u003cstrong data-start=\"209\" data-end=\"237\"\u003e“DPS 1943 20MM M21A1B1.”\u003c\/strong\u003e Manufactured in 1943 by Defense Plant Services, this round was used for \u003cstrong data-start=\"310\" data-end=\"357\"\u003etraining, feed testing, and function drills\u003c\/strong\u003e with 20mm aircraft and anti-aircraft cannons such as the Oerlikon or Hispano-Suiza.\u003c\/p\u003e\n\u003cp data-start=\"445\" data-end=\"592\"\u003eThe casing has a drilled hole and no live primer, confirming its \u003cstrong data-start=\"510\" data-end=\"525\"\u003einert\/dummy\u003c\/strong\u003e status. An authentic collectible piece of WWII ordnance history.\u003c\/p\u003e\n\u003cul data-start=\"594\" data-end=\"761\"\u003e\n\u003cli data-start=\"594\" data-end=\"631\"\u003e\n\u003cp data-start=\"596\" data-end=\"631\"\u003eHeadstamp: DPS 1943, 20MM M21A1B1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"632\" data-end=\"668\"\u003e\n\u003cp data-start=\"634\" data-end=\"668\"\u003eInert – safe, no live components\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"669\" data-end=\"701\"\u003e\n\u003cp data-start=\"671\" data-end=\"701\"\u003eApprox. length: ~6.75 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"702\" data-end=\"761\"\u003e\n\u003cp data-start=\"704\" data-end=\"761\"\u003eCondition: Very good, light patina consistent with age.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"763\" data-end=\"842\"\u003eA great addition to any \u003cstrong data-start=\"787\" data-end=\"839\"\u003emilitaria, aviation, or WWII ordnance collection\u003c\/strong\u003e.\u003c\/p\u003e","brand":"Maupin","offers":[{"title":"Default Title","offer_id":47297771831511,"sku":null,"price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1501\/8628\/files\/104_5320.jpg?v=1760541210","url":"https:\/\/annapolismaritimeantiques.com\/products\/wwii-20mm-dummy-round-dps-1943-m21a1b1-inert-training-cartridge","provider":"Annapolis Maritime Antiques","version":"1.0","type":"link"}