{"product_id":"ka-tech-mac-demon-slayer-hpa-m4","title":"KA Tech MAC Demon Slayer HPA M4","description":"\u003cp\u003eThe \u003cstrong\u003eKA Tech MAC Demon Slayer HPA M4\u003c\/strong\u003e is not a production rifle. It is a statement. Built from the ground up at KA Tech Airsoft in Orange, CA, the Demon Slayer is engineered to out-perform everything else on the field — and it does.\u003c\/p\u003e\n\u003ch4\u003eThe Build\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSkeletonized Body:\u003c\/strong\u003e Full skeletonized receiver design eliminates unnecessary weight while maintaining structural rigidity — aggressive, purposeful, and unlike anything else on the market.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoldable Stock:\u003c\/strong\u003e Imported from Taiwan, the foldable stock deploys left or right — giving you CQB compactness or extended precision shooting without compromise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJavelin M-LOK Handguard:\u003c\/strong\u003e Super-aggressive Javelin M-LOK rail gives you full accessory mounting flexibility across the entire handguard length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKA Tech Tuning:\u003c\/strong\u003e Every Demon Slayer is individually tuned by our technicians. Air efficiency, consistency, and velocity are optimized far beyond any stock or competitor build at this price point.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eF2 with Custom Hop-Up Assembly (Recommended)\u003c\/h4\u003e\n\u003cp\u003eWhen paired with the PolarStar F2 and Direct Attach Front Cylinder, the Demon Slayer receives KA Tech's special sauce with a custom hopup, bucking and inner barrel assembly, reserved only for our top of the line rifles  \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOur \u003cstrong\u003e7in variant\u003c\/strong\u003e shoots .40g 6mm BBs further than 99% of sniper setups on the market.\u003c\/li\u003e\n\u003cli\u003eOur \u003cstrong\u003e12in and 15in variants\u003c\/strong\u003e take that even further.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eEngine Options\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eF2 w\/ Front Cylinder Attachment\u003c\/strong\u003e (Recommended) — Full closed-bolt performance with KA Tech custom hop-up assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJack w\/ Front Cylinder Attachment\u003c\/strong\u003e — High-flow, efficient, reliable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKythera\u003c\/strong\u003e — Fully mechanical, no battery required, realistic trigger feel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFusion Engine\u003c\/strong\u003e — Standard FE configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eBuilt, tuned, and shipped from KA Tech Airsoft, Orange, CA.\u003c\/em\u003e\u003c\/p\u003e","brand":"KA Tech Airsoft","offers":[{"title":"7in \/ F2 w\/ Front Cylinder Attachment","offer_id":45872912367650,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"7in \/ Jack w\/ Front Cylinder Attachment","offer_id":45872912400418,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"7in \/ Kythera","offer_id":45872912433186,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"7in \/ Fusion Engine","offer_id":45872912465954,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"10in \/ F2 w\/ Front Cylinder Attachment","offer_id":45872912498722,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"10in \/ Jack w\/ Front Cylinder Attachment","offer_id":45872912531490,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"10in \/ Kythera","offer_id":45872912564258,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"10in \/ Fusion Engine","offer_id":45872912597026,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"12in \/ F2 w\/ Front Cylinder Attachment","offer_id":45872912629794,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"12in \/ Jack w\/ Front Cylinder Attachment","offer_id":45872912662562,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"12in \/ Kythera","offer_id":45872912695330,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"12in \/ Fusion Engine","offer_id":45872912728098,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"15in \/ F2 w\/ Front Cylinder Attachment","offer_id":45872912760866,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"15in \/ Jack w\/ Front Cylinder Attachment","offer_id":45872912793634,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"15in \/ Kythera","offer_id":45872912826402,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true},{"title":"15in \/ Fusion Engine","offer_id":45872912859170,"sku":null,"price":2250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/5355\/8050\/files\/ChatGPT_Image_Jul_1_2026_12_33_11_PM_4.png?v=1782939165","url":"https:\/\/www.katechairsoft.com\/products\/ka-tech-mac-demon-slayer-hpa-m4","provider":"KA Tech Airsoft ","version":"1.0","type":"link"}