This is an updated ramcore design machined and anodized by Roboman Automation. The design updates include some quality of life changes compared to the original versions like a hole drilled in the tip instead of a cut slot, and filleted edges in the magazine section.
These ramcores feature a machined section for o-rings, as well as an elongated machined section that fits between the feed lips of magazines. This means that you can change your magazines without having to prime the blaster halfway first.
The anodized clear versions are what we have been including in blasters and kits as we run out of the older versions.