{"product_id":"porter-machine-works-4-bolt-scope-rings","title":"Porter Machine Works 4-Bolt Scope Rings","description":"\u003cp\u003ePorter Machine Works 4-Bolt Scope Rings are a two-piece Picatinny ring set made in Sydney. Each ring is CNC-machined from 7075-T651 aluminium plate and anodised locally, with T20 Torx hardware and a 4-screw top cap.\u003c\/p\u003e\u003cp\u003eAvailable for 30, 34, 35, 36 and 40mm tubes in a range of heights to suit everything from compact hunting scopes to large-objective precision optics.\u003c\/p\u003e\u003cp\u003e30mm, 34mm and 36mm sizes are normally in stock. 35mm and 40mm sizes are made to order by Porter Machine Works, so allow extra time for these.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAustralian made, from 7075-T651 aluminium\u003c\/li\u003e\n\u003cli\u003eTwo-piece rings with 4-screw top caps\u003c\/li\u003e\n\u003cli\u003eTop caps can be swapped for a threaded cap to carry a Picatinny accessory rail\u003c\/li\u003e\n\u003cli\u003e30, 34, 35, 36 and 40mm tube sizes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Porter Machine Works\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075-T651 aluminium plate, CNC machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Anodised in Sydney\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface:\u003c\/strong\u003e MIL-STD-1913 Picatinny rail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeights:\u003c\/strong\u003e 30mm tube 23\/28\/33\/38mm; 34 and 35mm tube 26\/28\/33\/38mm; 36mm tube 28\/33\/38mm; 40mm tube 30\/33\/38mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e measured from the top of the Picatinny rail to the centre of the scope tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight per pair (approx.):\u003c\/strong\u003e 128g (30mm-23) to 193g (30mm-38)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide clamp screws:\u003c\/strong\u003e T20 Torx, 40 in-lb (4.5 Nm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop cap screws:\u003c\/strong\u003e T20 Torx, 17–25 in-lb (1.9–2.8 Nm)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Porter Machine Works","offers":[{"title":"30mm \/ 23mm","offer_id":54871029514524,"sku":"PMW-30mm-23","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"30mm \/ 28mm","offer_id":54871029547292,"sku":"PMW-30mm-28","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"30mm \/ 33mm","offer_id":54871029580060,"sku":"PMW-30mm-33","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"30mm \/ 38mm","offer_id":54871029612828,"sku":"PMW-30mm-38","price":280.0,"currency_code":"AUD","in_stock":true},{"title":"34mm \/ 26mm","offer_id":54871029645596,"sku":"PMW-34mm-26","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"34mm \/ 28mm","offer_id":54871029678364,"sku":"PMW-34mm-28","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"34mm \/ 33mm","offer_id":54871029711132,"sku":"PMW-34mm-33","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"34mm \/ 38mm","offer_id":54871029743900,"sku":"PMW-34mm-38","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"35mm \/ 26mm","offer_id":54871029776668,"sku":"PMW-35mm-26","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"35mm \/ 28mm","offer_id":54871029809436,"sku":"PMW-35mm-28","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"35mm \/ 33mm","offer_id":54871029842204,"sku":"PMW-35mm-33","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"35mm \/ 38mm","offer_id":54871029874972,"sku":"PMW-35mm-38","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"36mm \/ 28mm","offer_id":54871029907740,"sku":"PMW-36mm-28","price":290.0,"currency_code":"AUD","in_stock":false},{"title":"36mm \/ 33mm","offer_id":54871029940508,"sku":"PMW-36mm-33","price":290.0,"currency_code":"AUD","in_stock":false},{"title":"36mm \/ 38mm","offer_id":54871029973276,"sku":"PMW-36mm-38","price":290.0,"currency_code":"AUD","in_stock":false},{"title":"40mm \/ 30mm","offer_id":54871030006044,"sku":"PMW-40mm-30","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"40mm \/ 33mm","offer_id":54871030038812,"sku":"PMW-40mm-33","price":290.0,"currency_code":"AUD","in_stock":true},{"title":"40mm \/ 38mm","offer_id":54871030071580,"sku":"PMW-40mm-38","price":290.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/0835\/1516\/files\/DSC4766copy.jpg?v=1794189764","url":"https:\/\/www.magnumsports.com.au\/products\/porter-machine-works-4-bolt-scope-rings","provider":"Magnum Sports","version":"1.0","type":"link"}