{"product_id":"monk-customs-helix-outer-barrel-m4","title":"Monk Customs Helix Outer Barrel — M4, 6in and 7in","description":"\u003cdiv style=\"background:#edfaf1;border-left:4px solid #27ae60;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#1a6b3a;\"\u003eA twisted helix cut where a plain tube usually goes.\u003c\/strong\u003e Seven finishes, two lengths, and an O-ring that keeps the inner barrel properly centred.\n\u003c\/div\u003e\u003cp\u003eOuter barrels are usually the least interesting component on a build — a tube that holds the inner barrel and threads a muzzle device. The Helix is Monk's argument that it does not have to be. The spiral cut runs the length of the barrel and reads as machined detail rather than a printed effect, and it comes into its own under a skeletonised hand guard where the barrel is visible along most of its length.\u003c\/p\u003e\n\u003cp\u003eBehind the styling there is a functional detail worth knowing. Monk fit an O-ring inside the assembly that holds the inner barrel centred and under light tension. A loose inner barrel that can drift off-axis is a genuine source of inconsistency, so this is a real improvement over a plain tube rather than a decorative one.\u003c\/p\u003e\n\u003cp\u003eIt pairs deliberately with Monk's own skeletonised hand guards — the Vayu among them — but the effect works under any open rail where the barrel shows.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;margin:0 0 18px;\"\u003e\n\u003ctr style=\"background:#1B3A6B;color:#fff;\"\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding:7px 12px;text-align:left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003ePlatform\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eM4 outer barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eDesign\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eTwisted helix cut along the full length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eLengths\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003e6in and 7in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eFinishes\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMatte Black, Gloss Black, Purple, Silver, Red, Gold and Blue — seven in total\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eInner barrel retention\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eO-ring, keeps the inner barrel centred and tight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eDesigner\u003c\/td\u003e\n\u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMonk Customs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#fffbe6;border-left:4px solid #f0d060;padding:12px 16px;border-radius:0 6px 6px 0;margin:0 0 16px;font-size:13px;\"\u003e\n⚠ \u003cstrong\u003eThread and material are not published.\u003c\/strong\u003e Monk state the platform and the two lengths, but no thread pitch and no material for the Helix. It is described as an M4 outer barrel, and no MTW-specific fitment is claimed. Tell us your platform and we will confirm with the supplier rather than let you guess.\n\u003c\/div\u003e\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know\u003c\/h2\u003e\u003cp\u003eNot every finish and length combination is held by our usual supplier. Where a combination has to come direct from Monk it may take longer to reach you — ask before ordering if timing matters.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhich length do I need?\u003c\/strong\u003e It follows your hand guard. A 6in guard wants the 6in barrel and a 7in guard the 7in — measure the guard rather than the gun.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit a Wolverine MTW?\u003c\/strong\u003e The MTW uses M4-pattern hardware, but Monk do not state MTW fitment for this barrel and we are not going to assert it. Ask us and we will check before you commit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo all the finishes cost the same?\u003c\/strong\u003e Not quite — supplier cost varies across the range, so check the figure against the finish and length you have selected.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the finish anodised or coated?\u003c\/strong\u003e Not published. We would rather say so than describe a process we have not confirmed.\u003c\/p\u003e\n\u003cdiv style=\"background:#1B3A6B;color:#fff;padding:12px 16px;border-radius:6px;margin:18px 0 0;font-size:13px;\"\u003e\n\u003cstrong style=\"color:#fff;\"\u003e💡 Titan Forge Airsoft tip:\u003c\/strong\u003e A coloured barrel only shows under an open rail — if your hand guard is solid, the money is better spent elsewhere. Browse \u003ca href=\"\/collections\/accessories\" style=\"color:#cdd6f4;\"\u003eaccessories\u003c\/a\u003e.\n\u003c\/div\u003e","brand":"Monk Customs","offers":[{"title":"Gold \/ 7\"","offer_id":55656110162296,"sku":"9818274608","price":75.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 7\"","offer_id":55656110195064,"sku":"4050344168","price":75.95,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 7\"","offer_id":55656110227832,"sku":"1773172760","price":75.95,"currency_code":"GBP","in_stock":true},{"title":"Silver \/ 7\"","offer_id":55656110260600,"sku":"9160228526","price":65.95,"currency_code":"GBP","in_stock":true},{"title":"Gold \/ 6\"","offer_id":55656247099768,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":true},{"title":"Red \/ 6\"","offer_id":55656247132536,"sku":null,"price":65.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 6\"","offer_id":55656250704248,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Silver \/ 6\"","offer_id":55656250737016,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Matte Black \/ 6\"","offer_id":55656250769784,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Matte Black \/ 7\"","offer_id":55656250802552,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Gloss Black \/ 6\"","offer_id":55656250835320,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Gloss Black \/ 7\"","offer_id":55656250868088,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Purple \/ 6\"","offer_id":55656250900856,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false},{"title":"Purple \/ 7\"","offer_id":55656250933624,"sku":null,"price":75.95,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/MonkCustomsHelixOuterBarrel_TitanForgeAirsoft-Gold.webp?v=1788988905","url":"https:\/\/www.titanforgeairsoft.com\/products\/monk-customs-helix-outer-barrel-m4","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}