{"product_id":"silverback-mdrx-hpa-conversion-kit","title":"Silverback MDRX HPA Conversion Kit","description":"\u003cp\u003e\u003cstrong\u003eOfficial HPA conversion kit for the Silverback MDRX AEG.\u003c\/strong\u003e The \u003cstrong\u003eSilverback MDRX HPA Conversion Kit\u003c\/strong\u003e converts the MDRX AEG platform into an electro-pneumatic HPA rifle. According to Silverback, the system uses a simple and robust \u003cstrong\u003eopen-bolt HPA architecture\u003c\/strong\u003e, designed for reliability, consistent feeding, wide power adjustability and high rate-of-fire capability.\u003c\/p\u003e\n\u003cdiv class=\"video-wrapper\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/FWCkE7ooFQ8\" title=\"Je converti mon MDRX Silverback en HPA \/ Kit HPA review et Test\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/youtu.be\/FWCkE7ooFQ8?is=G6ViL7uuCEHbD2O2\" rel=\"noopener\" target=\"_blank\"\u003eWatch the full review\/test video: “Je converti mon MDRX Silverback en HPA \/ Kit HPA review et Test” — Diaboloman Sniper France\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat is shown in the official photos\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMain HPA assembly with MDRX-specific housing and Silverback branding.\u003c\/li\u003e\n\u003cli\u003ePneumatic block with solenoid\/electro-valve, black air tubing and push-fit fittings.\u003c\/li\u003e\n\u003cli\u003eExternal HPA line with metal quick-disconnect fitting.\u003c\/li\u003e\n\u003cli\u003eElectronic FCU board marked \u003cstrong\u003e“SBA MDR-X FCU V1.2”\u003c\/strong\u003e, with Hall sensor, SW1 button, “VALVE” connector and red\/black wiring.\u003c\/li\u003e\n\u003cli\u003eMachined internal components, modular nozzle\/cylinder assembly and green\/black O-rings for pneumatic sealing.\u003c\/li\u003e\n\u003cli\u003eCompact internal layout designed to fit inside the MDRX platform.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePractical information from the video\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation requires removing the AEG gearbox\/system and replacing the firing control board with the HPA FCU.\u003c\/li\u003e\n\u003cli\u003eThe wiring and HPA line must be routed through the rifle; the reviewer notes that the body already has a marked\/pre-drilled area for the line exit.\u003c\/li\u003e\n\u003cli\u003eReviewer installation estimate: around 1h30 for a first installation while following Silverback’s official video; with practice, around 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003eSwitching back and forth between HPA and AEG is not instant: wiring, the control board and internal routing make it more involved than simply removing pins.\u003c\/li\u003e\n\u003cli\u003eThe HPA hop-up includes a retention modification — a red plastic part — intended to greatly reduce the risk of double feeding, especially at high rates of fire.\u003c\/li\u003e\n\u003cli\u003eProgramming is done with no magazine inserted, with battery and air connected, using the trigger and the semi\/full selector.\u003c\/li\u003e\n\u003cli\u003eProgrammable modes mentioned: shooting mode, dwell, rate of fire, DMR cooldown, battery protection, sleep mode, daily\/total shot counter and reset\/factory reset.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectronic settings mentioned in the video\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShooting mode:\u003c\/strong\u003e full auto, burst, binary, semi or safe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDwell:\u003c\/strong\u003e adjusts how long the nozzle\/valve cycle delivers air, helping send only the air needed for performance and efficiency. Range mentioned: 2.5 ms to 12 ms; default at maximum, 12 ms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRate of fire:\u003c\/strong\u003e minimum 12 rps, default 20 rps and maximum 50 rps. The video demonstrates 12, 30 and 50 rps; the reviewer considers 30 rps already very high and 50 rps only advisable if magazines can keep up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDMR cooldown:\u003c\/strong\u003e delay between semi-auto shots, from 0.5 s to 5 s, useful to limit the firing rhythm for DMR\/sniper-style setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery protection:\u003c\/strong\u003e default cutoff mentioned at 3.3 V per cell; can be lowered to 3.0 V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleep mode:\u003c\/strong\u003e standby from 1 h to 10 h, or disabled.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNozzles and usage range discussed\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe reviewer states that the kit comes by default with the \u003cstrong\u003e2-hole nozzle\u003c\/strong\u003e, described as the versatile option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-hole nozzle:\u003c\/strong\u003e oriented toward low-power setups, roughly 0.5–1 J according to the video.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-hole nozzle:\u003c\/strong\u003e general-purpose range, roughly 1–1.5 J according to the video.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-flow \/ 6-hole nozzle:\u003c\/strong\u003e aimed at higher-power DMR\/sniper configurations.\u003c\/li\u003e\n\u003cli\u003eAccording to the video, Silverback recommends working at around \u003cstrong\u003e4 to 6.5 bar\u003c\/strong\u003e: below that, cycling issues may occur; above that, excessive air disturbance may reduce accuracy.\u003c\/li\u003e\n\u003cli\u003eResults depend on barrel length, BB weight, pressure, dwell and hop-up setting. The video stresses that the official measurements are made with no hop-up applied.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOfficial Silverback performance charts\u003c\/h3\u003e\n\u003cp\u003eApproximate values read visually from Silverback’s official charts, with no hop-up applied:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1-hole nozzle + 6.05 x 330 mm barrel:\u003c\/strong\u003e from 4 to 10 bar \/ 58 to 145 PSI, approx. 0.32–0.52 J at 4 bar up to 0.92–1.41 J at 10 bar depending on BB weight from 0.20 g to 0.50 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-hole nozzle + 6.05 x 420 mm barrel:\u003c\/strong\u003e from 4 to 10 bar \/ 58 to 145 PSI, approx. 0.73–1.08 J at 4 bar up to 1.81–2.66 J at 10 bar depending on BB weight from 0.20 g to 0.50 g.\u003c\/li\u003e\n\u003cli\u003eThe charts mark pressure zones: low pressure with risk of unstable operation, ideal pressure, high pressure with possible loss of accuracy, and over-pressure with risk of loss of accuracy or mechanical failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePrice and availability\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eOfficial price and availability are still pending.\u003c\/strong\u003e Silverback confirmed by email that price and release date had not yet been announced by email. The official page\/category shows \u003cstrong\u003eETA June 2026\u003c\/strong\u003e. In the video, the reviewer says he did not have official pricing at the time of recording and speculates about the complete HPA version; that comment is not an official kit price and should not be used as final pricing.\u003c\/p\u003e","brand":"Silverback","offers":[{"title":"Default Title","offer_id":54008452940117,"sku":"SP-SBA-HPA-01","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1024\/3607\/7909\/files\/SBA-HPA-01-1S-scaled.jpg?v=1779800288","url":"https:\/\/www.skirmshop.es\/en-us\/products\/silverback-mdrx-hpa-conversion-kit","provider":"Skirmshop Spain","version":"1.0","type":"link"}