Airsoft Upgrades

Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized

Brand: Primary AirsoftCategory: HPA Guns1 retailer

Price: $169.99 — In stock at 1 retailer.

Prices last checked August 20, 2026 across 1 retailer.

Our 5th generation Hi-Capa M4 angled aluminum adapter is designed to be our answer to make a lightweight and durable adapter. The magazine release is now CNC machined aluminum for all Gen5 Primary Airsoft adapters. This adapter allows you to use HPA (high pressure air) and M4 AEG magazines on your Hi-Capa airsoft pistol. To use it you will also need an M4 AEG magazine, “paintball” tank with low pressure regulator (0-140 psi), a hose with a Foster (polarstar) quick disconnect and of course bbs. The normal operating pressure for green gas is roughly 120 psi depending on the temperature. We recommend that you run your pistol near this pressure and do not exceed 140 psi. Keep in mind that higher pressures can cause excessive wear and damage to the internal components of your airsoft pistol. We recommend that you use high quality M4 AEG magazines with strong springs for the most consistent performance. Do not leave your magazines loaded with bbs for an extended period of time as this will cause the springs to fatigue and lose performance. Worn out AEG magazine springs should be replaced with superfeed springs. Please watch the installation video on YouTube titled: Primary Airsoft adapter installation tutorial HPA and M4 Glock + Hi-capa https://youtu.be/AydmykdSGSM The adapter now comes with a longer screw which has a 2.5mm hex head. They also come with our new universal feed tube that will fit the following magazines: Tokyo Marui Hi-capa magazines 5.1 and 4.3 WE Tech/Armorer Works Hi-capa magazines 5.1 ONLY "long baseplate" ***(Our adapters do NOT fit WE Tech 4.3 magazines "short baseplate")*** Novritsch SSP1/KJ Works Hi-capa Magazines. Guarder light weight aluminum magazine bodies. The metal quick disconnect fitting in the photos will come installed. The fitting is a US standard Foster Pneumatics 1/8 NPT quick disconnect. The fitting can be changed to any fitting that has 1/8 NPT threads. Be sure not to cross thread the fitting when installing a different one. The adapt

Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized price comparison: the lowest price is $169.99 at Primary Airsoft, and the median across 1 tracked listing is $169.99.

Compatible with: M4/AR, Hi-Capa, Glock, HPA, AEG

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Where to buy the Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized: prices at 1 retailer

  • Primary Airsoft: $169.99 — In Stock

Frequently asked questions about the Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized

How much does the Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized cost?
The Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized ranges from $169.99 across 1 retailer. The lowest current price is at Primary Airsoft. Prices are updated regularly from each store's live catalog.
Where can I buy the Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized?
The Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized is currently in stock at 1 retailer including Primary Airsoft. We track availability across 1 airsoft stores and update stock status regularly.
What is the Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized compatible with?
M4/AR, Hi-Capa, Glock, HPA, AEG
Is the Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized a good hpa guns upgrade?
The Hi-Capa HPA/M4 Angled Aluminum Adapter Skeletonized by Primary Airsoft is listed in our HPA Guns category and is priced from $169.99. We aggregate prices from 1 retailer so you can compare and find the best deal. Check the price comparison table above for current pricing from each store.

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