{"product_id":"rflby87r","title":"[KM Planning] Maruzen Airsoft Shotgun CA870 Large Bore Extension Rectifier Unit L80mm [RFLBY87R]","description":"\u003cdiv\u003e\n\n\u003cdiv\u003e\n\n\u003cdiv\u003e\n\n\u003cspan\u003eThis is a large-bore extension rectifier unit designed exclusively for the Maruzen CA870 air shotgun.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eBy adding a large-bore extension to the tip of a stock-size inner barrel, this custom part streamlines the compressed air that accelerates BB pellets, aiming to improve trajectory stability and grouping.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e▍Important Before Purchase\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis product cannot be installed on its own.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThe following separately sold item is required:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eKM Project Maruzen Air Shotgun M1100 Riot Shorty \/ CA870 \/ CQB Compatible Silencer Adapter with Reverse Threading [MZ8711R]\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis product is designed to secure the internal large-bore extension barrel by screwing this product into the silencer adapter and then tightening the main body.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cspan\u003eCannot be used with custom guns equipped with long inner barrels.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis product is designed exclusively for stock-size inner barrels. It is intended to extend the stock barrel with a large-bore extension and add a streamlining (rectifier) effect.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e▍Product Specifications\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eItem Content\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCompatible Models Maruzen CA870 Air Shotgun\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eInner Barrel Overall Length 80mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eInner Barrel Inner Diameter 7.5mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eInner Barrel Outer Diameter (Gun Side) 8.0mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eInner Barrel Outer Diameter (Muzzle Side) 8.5mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHolder Overall Length 55.2mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHolder Outer Diameter 23.0mm → 20.9mm (Tapered)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eConnection Thread M14×1 Reverse Thread (Male)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMounting Thread M14×1 Reverse Thread (Female)\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cbr\u003e\u003cspan\u003e▍Product Development\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDeveloped in Japan \/ Manufactured in Japan \/ Made in Japan\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e▍What is a Large-Bore Extension?\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eA large-bore extension is a **rectifier (streamlining)** system that smooths the flow of compressed air by allowing it to pass through a large-diameter barrel even after the BB pellet leaves the stock inner barrel.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eNormally, when a BB pellet leaves the muzzle, the compressed air can burst out as turbulent air, slightly affecting the trajectory.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThanks to the large-bore structure that ensures sufficient clearance to avoid contact with the BB pellet, this product streamlines only the excess air and suppresses unnecessary forces applied to the BB pellet.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e▍Main Features\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDesigned exclusively for stock-size inner barrels\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eStreamlining (rectifier) effect provided by the large-bore structure\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e7.5mm inner diameter design prevents contact with BB pellets\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eM14 reverse threading for easy attachment and removal\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSilencer shape provides a natural appearance\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eHigh-precision design developed and manufactured in Japan\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cbr\u003e\u003cspan\u003e▍Shooting Performance\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThis product is not a long barrel designed to increase muzzle velocity.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eBy adding a large-bore extension to a stock-size inner barrel and streamlining the compressed air that follows the BB pellet, it suppresses the generation of turbulent air.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAs a result, it reduces unnecessary lateral forces applied to the BB pellet, and improved straight-line trajectory stability and grouping can be expected.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eThis is the ideal custom unit for users seeking more stable shooting performance while making the most of the stock barrel's performance.\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"KM企画","offers":[{"title":"Default Title","offer_id":49807783690499,"sku":"RFLBY87R","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0405\/1684\/5735\/files\/RFLBY87R_5.jpg?v=1792387327","url":"https:\/\/rock-et.jp\/en-asia\/products\/rflby87r","provider":"ROCK-et","version":"1.0","type":"link"}