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Engineered to be the lightest carbon fiber wrapped bottles ever released by HK Army
Bolt System
Full Auto)
improving readability and ease of use
Aluminum or Delrin Bolt Construction
HK Army Elite S63 Pro Barrel Kit yaya Engineered to be the lightestThe Planet Eclipse Shaft S63 Pro is the most advanced barrel system yet! Introducing the Eclipse PWR Inserts and 3 piece construction, the S63 Pro offers exceptional shot consistency, precision and control. Combined with its aggressive styling, reduced sound signature and class leading flexibility, the S63 3 Piece Barrel System is all the barrel you'll ever need. The S63 Pro Barrel System construction comprises of 3 main elements: At the front is a
