{"product_id":"cross-armory-flop-stop-pin-pal-black-melonite-4140-steel-ar-15-m16-m4","title":"Cross Armory Flop Stop + Pin Pal Black Melonite 4140 Steel AR-15\/M16\/M4","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eCross Armory Flop Stop + Pin Pal\u003c\/span\u003e\u003c\/strong\u003e combo is a drop-in \u003cstrong\u003eupper receiver stabilizer\u003c\/strong\u003e and \u003cstrong\u003efront takedown pin\u003c\/strong\u003e upgrade for the \u003cstrong\u003eAR-15\/M16\/M4\u003c\/strong\u003e platform. The kit pairs Cross Armory's oversized Pin Pal takedown pin with the Flop Stop upper receiver hold-open device, both machined from \u003cstrong\u003e4140 ordnance steel\u003c\/strong\u003e and finished in \u003cstrong\u003eblack melonite\u003c\/strong\u003e for wear and corrosion resistance.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003ePin Pal\u003c\/strong\u003e features an enlarged pin head that makes separating the upper and lower receiver faster and easier by hand. It includes the pin, a locking nut, and a MIL-SPEC captive bearing, and is fully removable so the rifle can be returned to factory configuration at any time. The matching \u003cstrong\u003eFlop Stop\u003c\/strong\u003e addresses \"Limp Barrel Syndrome\" (L.B.S.) by holding the upper receiver in the open position, allowing quicker and more convenient reloads.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eMarketed as \u003cstrong\u003estate-compliant\u003c\/strong\u003e AR-15 parts, this Flop Stop + Pin Pal set fits standard AR-15-pattern rifles and carbines, including M4 and M16 variants, and installs without permanent modification to the host firearm.\u003c\/span\u003e\u003c\/p\u003e","brand":"Cross Armory","offers":[{"title":"Default Title","offer_id":55468439699778,"sku":"100989","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_baa635d8-dafa-43eb-b6e5-8155963ecdf9.png?v=1785398354","url":"https:\/\/centerfiresystems.com\/products\/cross-armory-flop-stop-pin-pal-black-melonite-4140-steel-ar-15-m16-m4","provider":"Centerfire Systems","version":"1.0","type":"link"}