Hi-Capa HPA/M4 Adapter

cults3d

This adapter is for Hi-Capa GBB pistols to use M4 mags with HPA. I did this design mainly because other adapters were expensive, and for me, who live in Brazil, shipping and other fees make it even more expensive. The other reason is that we always want to modify some details in existing products and making your own design is the best way to do it. :) I have added 2 base adapters, one with 64mm of width and other with 65mm to fit most of the magazines available. If you download this model and have any fitting problem please let me know and I can adapt to your needs. UPDATE: Now this model has a BB lock to avoid lost when changing mags! (as you can see in the picture) The number of BBs you lose is the same of when used with your M4, if your mag have a BB follower no BB is lost! Others minors updates where made to improve air sealing. You will need: - 01 Foster Quick Disconnect Coupler Male Plug 22-2 (1/8 Npt thread)https://www.aliexpress.com/item/1005001612712857.html - 01 Compression spring (length=10mm, wire diameter=0.7mm, outer diameter=7mm)https://www.aliexpress.com/item/1005001408311742.html - 01 Compression spring (cutted in half - length=15mm, wire diameter=0.4mm, outer diameter=5mm)https://www.aliexpress.com/item/1005001408323096.html - 01 Oring O-ring Sealing NBR 21mm x 2.4mmhttps://www.aliexpress.com/item/4000288367497.html - 01 M2 Screw 20mm - 04 M3 Screw 12mm - Silicone Grease/Oil - Epoxy Resin (to glue HPA connector) Quick Assembly Guide: - Insert the feeding lock in the adapter lid in the way that the lock tooth stay in the way of the BB. - Insert the compression spring (7/0.4/5mm) in the lid putting the lock in place. - Attach the lid in the base with the 4 12mm M3 screws. - Put the compression spring (10/0.7/7) in the side of the base and then put the adapter lever over the spring, so the spring will push the adapter lever away from the base. - Insert the 20mm M2 screwy from the bottom of the base and through the adapter lever, making it as an adapter lever movement axis. - Put the O-ring and use some silicone grease/oil to get better air sealing. - Put the feeding tube on the base into the Glock magazine fixing it with the original screw. - Put a little bit of Epoxy resin in the foster connector and screw it into the base. (no need much epoxy) TOKYO MARUI MAGS: This adapter is presenting some issues with TM Mags. I working on to solve this issue and when it done I will add a TM version. Everyone who have purchased will be able to download the TM version without any additional cost. Thanks!