{"product_id":"maxx-model-double-o-ring-aluminum-piston-head","title":"Maxx Model Double O-Ring Aluminum Piston Head","description":"The Maxx Model Double O-Ring Aluminum Piston Head and bearing.  Fits airsoft M4 AEGs and ALL other gearbox version (all versions) guns.  Double rubber o-ring for tighter seal and compression.  An excellent high quality piston head for upgrades.  High quality aluminum red for durability.","brand":"ASA","offers":[{"title":"Default","offer_id":17128739471450,"sku":"d2995a02-081e-4505-8303-2ccfdcea390a","price":11.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0063\/4526\/1146\/products\/MX-PIS001PHS_01-1000x1000.jpg?v=1571718120","url":"https:\/\/airsoftgrounds.myshopify.com\/products\/maxx-model-double-o-ring-aluminum-piston-head","provider":"Airsoft Grounds","version":"1.0","type":"link"}