{"product_id":"ar-15-pin-pal-ar-platform-4140-steel-black-melonite-md-crpp","title":"AR-15 Pin Pal AR Platform 4140 Steel, Black Melonite Md: CRPP","description":"\u003cb\u003eCross Armory AR-15 Pin Pal AR Platform 4140 Steel, Black Melonite Md: CRPP\u003c\/b\u003e\u003cbr\u003e\r\nCross Armory offers the solution with Pin Pal. This front takedown pin replacement transfers rotational wear from a steel pin bearing on the aluminum receiver to a steel pin which bears on a pre-lubricated MIL-SPEC metal bearing. \r\n\r\nThe Pin Pal includes a pin and locking nut machined from 4140 Ordnance Steel for extreme durability, and a MIL-SPEC captive bearing made from porous metal with an increased iron content for increased strength and resistance to shock loads. Separating the receivers creates start-up friction which causes the captive bearing to release a thin layer of oil on the bearing s surface. The Captive Bearing can be press fit into any upper receiver without special tools. The Pin Pal installs easily on virtually all AR-15\/M4 weapons, and is easily removed to return your rifle to the previous set-up.\r\n\r\nType: Pin Replacement\r\nModel: AR-15\r\nDimensions: AR Platform\r\nMaterial: 4140 Steel\r\nFinish: Black Melonite","brand":"Cross Armory","offers":[{"title":"CRPP \/ AR-15 Parts \/ Cross Armory","offer_id":43141837258857,"sku":"11208685","price":28.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/8341\/4377\/files\/SS_36666.jpg?v=1776694611","url":"https:\/\/westerngunstore.com\/products\/ar-15-pin-pal-ar-platform-4140-steel-black-melonite-md-crpp","provider":"Western Gun Store","version":"1.0","type":"link"}