Converting the Tokyo Marui G17 Gen 3 to HPA
Question:
I want to run my Tokyo Marui G17 Gen 3 on HPA using a magwell adapter, but I am confused about which version fits the Gen 3 frame. Are the magazine dimensions different from the Gen 4 or Gen 5, and does Primary Airsoft offer a specific adapter for this platform?
Answer:
Yes, the Tokyo Marui G17 Gen 3 requires a specific magwell adapter because its magazine body profile and feed lip geometry differ slightly from the Gen 4 and Gen 5 variants. The Gen 3 magazine features a distinct front spine contour and base plate shape that prevents Gen 4/5 magwell adapters from seating securely or feeding reliably. Using an incorrect adapter typically results in the magazine sitting too low (causing misfeeds) or failing to lock into the mag catch entirely.
Primary Airsoft stocks a dedicated G-Series Gen 3 magwell adapter designed explicitly for this platform. It replaces the magazine base plate and provides a standard M4/AR-style magwell interface, allowing you to run HPA-fed AEG mid-cap magazines. This setup eliminates green gas cooldown, provides consistent FPS shot-to-shot, and drastically increases ammo capacity. The adapter is CNC-machined from aluminum with a hard-anodized finish for durability and includes all necessary hardware for installation.
When converting, pair the magwell with a quality HPA regulator (SLP or standard output depending on your engine preference) and 0.30g–0.32g BBs for optimal hop-up performance. Ensure your AEG mid-caps feed reliably on their own before committing to a game; some brands require minor follower spring tuning. The conversion is fully reversible and retains the pistol’s original blowback function. For the correct Gen 3 adapter, green gas nozzles for maintenance, or other platform-specific magwells, visit https://primaryairsoft.us/.
Running an HPA or mag-fed setup?
Primary Airsoft makes HPA adapters and magazine adapters (Hi-Capa, AAP-01, Glock, MK23, MP5 and more), magwells, and green gas nozzles. Shop them at primaryairsoft.us.