It’s time to reveal the big secret.
This pen takes MANY kinds of refills. You don’t have to use the included Jetstream ink. Chances are if your favorite refill looks like what’s included, you might get it to fit, either directly or with some minor tweaking.

Compatible refills include:
1. Uni SXN (Jetstream)
2. Zebra JF (Sarasa)
3. Pentel LRN5 (Energel)
4. Pilot BRFV (Acroball)
5. Uni UMR-85 (Signo)

If we were all as accepting as this pen barrel then there will no longer be wars on this planet.
Definitely check the dimensions before you buy these alternative refills though.

I just received mine and I love it ^^ Here\'s some pros/cons of the pen:

Pros:
- Jetstream = super nice for a ballpoint pen
- alpha gel grip (it takes 1-2 days to \"break in\" but once it\'s broken in, the grip will feel like the grip from the alpha gel original series.same texture and squish
- refillable: i definitely wanted a pen which i could refill. why pay for a pen body if you can\'t refill it ~shrug~ anyways...the refills cost $ and reviews say that the blue refill sucks soooo we\'ll see. I bought an extra black refill just in case.
- METAL! xD feels good. the end/body of the pen is skinnier than expected.

Cons:
- Grip\'s a dirt/fuzz magnet more so than the other grips. (see below for a fuzz rating xD) I put a touch of hand cream on the grip and rubbed it in. I do this for all of my alpha gel grips because it helps to break the grip in faster and keeps the grip slick enough so that dirt/fuzz doesn\'t cling to it.
- it\'s a ballpoint....but one of the better ones

Side Notes:
- The Zebra B2A1 is a nice full metal (duel color) ballpoint as well. I actually prefer to use the zebra to write on binder paper over the uni jetstream.
- This being said...the $$ really?.... -____- whatever
- I also bought the full-rubber grip jetstream and in my opinion, from a visual standpoint, the rubber jetstream looks a ton sicker than the alpha gel one. It\'s not how the pen looks laying on a table...it\'s how it looks in your hand when you\'re writing w/it.

Excellent Pen! I sadly had to reorder it as mine went missing, and I only hope the new owner appreciates it as much as I did. I was already in love with the Jetstream ink, but the marriage with Alpha Gel makes it that much better. I can't stress enough how much I love it!

Just ordered this pen, and as usual Jet Pens delivered on time as ordered. I am delighted with this pen, find the comfort and balance to be ideal, particularly for long writing sessions. I am a prolific note taker in business situations, and this is now my go to pen. Upon receiving the pen, I changed the refill cartridge from the .7MM that came in the pen to a 1.0MM that suits my style better. Standard Uni-Ball refills work just fine, and they are excellent to write with. The gel grip is very comfortable, and suits my writing style very well. It does tend to be a lint and dust magnet, but I rubbed it down with a laundry dryer sheet, and that removed the static from the grip and cured the lint problem. Overall, this is an excellent pen, a little pricey but worth the money in my opinion. Highly recommended.

I bought this pen at the same time as a Jetstream Premier to compare the two. This pen is entirely worth the money, especially compared to the flimsy, cheap-feeling Premier. It's got a beautifully weighted metal body, a luxurious gel grip, and a satisfying click. I traded the 0.7mm ink tip for a 1.0mm tip due to personal preference (both felt quite smooth, but I like the look of a bolder line)

Something to note: it's true that the gel grip is a bit of a lint magnet. It's so freakin' comfortable, though, that I'm willing to overlook it. To me, the overall aesthetic of the body is so nice that it doesn't really matter. This immediately became my favorite go-to pen, and I would absolutely consider buying it again in the future.

I'm not a big fan of the machined body, as it has a scratcher texture then expected that makes less comfortable to write with. The pen itself writes fine but is a little heavy.

The alpha gel is on the squishier side of the firmness scale which is quite comfy. As reported by other reviews tends to collect dust. Unfortunately, I grip my pens pretty close to the tip which doesn't work great on this model, as the gel grip doesn't extend far enough forward to support it.

Love the body of this pen- in theory. It takes many MANY refills, and I HATED the Jetstream one that came in it. Took me a very long time to use it up, but I did move it to a different body. The body of this pen, specifically the gel section, slid around too much to get a grip on the pen. I would find myself holding the pen up further than usual to get around this. also the gel would sometimes slip under the machined part, causing an edge. Not my favorite overall.

Love, love, love! I have always been a fan of the alpha gel series (I also have purchased pencils with this grip) and Jetstream is the only ballpoint pen that I can use without frustration, but I really enjoy being able to use other ink refills with it. I've tried it with both the Pentel Energel and Zebra Sarasa, and the fit is perfect!

Just to update my previous review...
This has become the top ball point pen in my case. After you get the ink flowing...it works really well. The grip (after being broken in) is exactly like that of the alpha gel original series (pencil) cept it\'s just a bit firmer which is very nice.

I still think the price is a bit steep but ~shrug~ what can you do.

Great gel grip that makes hand less strained. All pens I own are Jetstream pens because I'm a leftie and they don't smear on left hand. The pen feels a bit heavy than plastic version of Jetstream, but the material seems sturdy and elevated compared to plastic version. Worth the price!!