{"product_id":"mechlabs-xx-mold-bolt","title":"MechLabs XX-Mold Bolt — Adjustable Nozzle for XX-Mod, NEXXUS and ARC","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;\"\u003eMechLabs XX-Mold Bolt — more shots per tank, and a nozzle you set to your own hop chamber.\u003c\/strong\u003e Engineered for the XX-Mod, and cross-compatible with NEXXUS and ARC.\n\u003c\/div\u003e\n\u003cp\u003eThe bolt is where an HPA engine spends its air, so it is also where the gains hide. The XX-Mold reduces air consumption per shot, which means \u003cstrong\u003emore shots per tank\u003c\/strong\u003e without changing how the gun performs.\u003c\/p\u003e\n\u003cp\u003eThat lower demand pays off twice. Because it needs less volume during rapid fire, it stays stable on \u003cstrong\u003elower-flow third-party regulators and tank presets\u003c\/strong\u003e that would otherwise fall behind. If your regulator is not a high-flow unit, this is the part that makes the difference.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eadjustable nozzle\u003c\/strong\u003e is the headline. Rather than living with a fixed length, you set the nozzle to sit precisely in your hop-up chamber — which improves grouping and output stability, and synchronises the internal air-cycle rate to deliver the right air volume for your nozzle length and configuration.\u003c\/p\u003e\n\u003cp\u003eIt also minimises the shot-down effect, so the transition from semi into full auto is smoother with less drop across a burst. And although MechLabs engineered it for the XX-Mod, it is fully cross-tech compatible with the \u003cstrong\u003eNEXXUS and ARC\u003c\/strong\u003e platforms, so owners of those engines get the same air performance.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eSpecifications\u003c\/h2\u003e\n\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;\"\u003eType\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eHPA engine bolt with adjustable nozzle\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eEngineered for\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMechLabs XX-Mod\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eCross-compatible\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eNEXXUS and ARC platforms\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eNozzle\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAdjustable to fit the hop-up chamber\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eAir consumption\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eReduced — more shots per tank\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBurst management\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eLower air-volume demand during rapid fire\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eRegulators\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eStable on lower-flow third-party regulators and tank presets\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eShot-down effect\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMinimised for smoother semi to auto transition\u003c\/td\u003e\n  \u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eBrand\u003c\/td\u003e\n    \u003ctd style=\"padding:7px 12px;border:1px solid #eee;\"\u003eMechLabs\u003c\/td\u003e\n  \u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eGood to know before you buy\u003c\/h2\u003e\n\u003cp\u003eA component rather than a complete engine, and it is already fitted to a new XX-Mod — so this listing is for upgrading a NEXXUS or ARC, or replacing a worn bolt.\u003cbr\u003e\u003cbr\u003eSet the nozzle to your chamber rather than leaving it at default. That adjustment is where the grouping and stability gains come from.\u003c\/p\u003e\n\u003ch2 style=\"font-size:16px;color:#1B3A6B;margin:18px 0 8px;\"\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill it fit my NEXXUS or ARC?\u003c\/strong\u003e\u003cbr\u003eYes. MechLabs engineered it for the XX-Mod but built it cross-tech compatible with both NEXXUS and ARC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need it if I have just bought an XX-Mod?\u003c\/strong\u003e\u003cbr\u003eNo, the engine ships with it. This is for NEXXUS and ARC owners wanting the same air performance, or to replace a worn one.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much air will it actually save?\u003c\/strong\u003e\u003cbr\u003eMechLabs do not publish a percentage. What they do state is that lower volume demand keeps it stable on lower-flow regulators, which is the benefit most people notice in practice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does adjusting the nozzle achieve?\u003c\/strong\u003e\u003cbr\u003eIt sets the fit into your hop-up chamber precisely, improving grouping and output stability, and syncs the air-cycle rate to your nozzle length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan you fit it?\u003c\/strong\u003e\u003cbr\u003eYes — we are an authorised MechLabs tech centre and handle this kind of work in the workshop.\u003c\/p\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\u003eRunning HPA:\u003c\/strong\u003e always feed an engine through a secondary regulator and never connect it directly to a tank output. Check the rated pressure before setting a regulator, and chronograph to your site limit before playing.\n\u003c\/div\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 see the \u003ca href=\"\/products\/mechlabs-xx-mod-fully-mechanical-hpa-engine-for-v2-gearbox\" style=\"color:#cdd6f4;\"\u003eXX-Mod engine\u003c\/a\u003e it was built for, or the full \u003ca href=\"\/collections\/hpa-engines\" style=\"color:#cdd6f4;\"\u003eHPA engine range\u003c\/a\u003e. As an authorised MechLabs tech centre we fit, tune and service these in house rather than sending them away, or \u003ca href=\"https:\/\/wa.me\/447874452357\" style=\"color:#cdd6f4;\"\u003emessage us on WhatsApp\u003c\/a\u003e.\n\u003c\/div\u003e","brand":"MechLabs","offers":[{"title":"Default Title","offer_id":55643212644728,"sku":"7665860684","price":84.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/8097\/3450\/files\/MechLabsXX-MoldBoltAdjustableNozzle_TitanForgeAirsoft.webp?v=1788284904","url":"https:\/\/www.titanforgeairsoft.com\/products\/mechlabs-xx-mold-bolt","provider":"Titan Forge Airsoft","version":"1.0","type":"link"}