RedCowl Harrier/Seagull Bearing-Assisted Prime Kit

So it worked great when I first installed it. Definitely made the prime feel smoother. But it might not be super durable when using heavy springs.

During some heavy game day use I noticed a weird jam that locked up my priming bar. I worked the prime a couple times until it cleared up, but I started noticing extra resistance and some weird spring noise. The next day I removed the barrel and noticed it had been scraped up by the return spring. I spent a bunch of time trying to figure out what was wrong the return spring until I realized that the screws on one side the 3d printed bearing part had worked itself loose and I think was causing some misalignment during priming. I tightened the screws again and cleaned up the barrel a little and it worked smoother with the weird sound disappearing. After a couple days of backyard plinking I did some maintenance checks and noticed the screws were starting to get slightly loose again. I've only been running it for a month so I'm not sure how long it will actually last.

I think if you plan on running this it might be safer to not use the 1.6x250/1.6x300 springs, priming them might be putting too much pressure on the plastic threading. I would also caution against using the return spring as it could jam and ruin your barrel. I strongly recommend checking the screws every time you do maintenance, problems can probably be prevented if you check them before / after games.

I cant tell if it's any better than before. It does feel gritty, like the other reviews say, it doesn't feel smooth.
But I did pair it with a heavier spring. I was expecting it to feel smoother but maybe it will get better. Everything installed fine. All of the rollers were smoothly spinning before install.

The print was a little strangely oriented since it chose to ignore redcowl's support free picatinny, but it didn't affect the end result. The bearings however, became gritty upon any load being applied. The vertical pair are spaced very tightly and cause the block to always feel gritty, but removing one from that set still causes whatever other bearing you torque the block against become gritty.

Fast delivery excellent service! Item came as described! Amazing quality! Definitely order from again!

Nice quality and results for a small investment.