Umbrella Prometheus 6.03 EG inner barrel with R-hop
$115.00
Type:
Assembly
~3 Week Build Time
A truly timeless, tried and true setup.
A truly timeless, tried and true setup.
Be aware, shots will be erratic/inaccurate for the first 5,000 rounds put through, it takes a little time for the patch to break in and conform to the shape of a BB. Once you play a couple of games you should be shooting extremely accurate!
Prometheus 6.03 EG inner barrel with installed R-Hop modification. Available with a pre-assembled drop in kit for compatible TM spec M4 type AEG/HPA Airsoft guns.
The perfect upgrade for any gun, to increase accuracy, range and consistency of each shot fired. Out range anyone else on the field with incredible range and accuracy despite FPS.
Our handmade R-Hop has been an integral modification we perform for all our builds as users can experience 30% increased effective range over non R-Hopped barrels.
Purchase in a complete drop in assembly configuration for a true plug and play upgrade process if your build uses a Tokyo Marui spec M4 style hop up unit.
Please note that there is a little slit in the patch near the end of the barrel, that slit is intended to help vent air pressure on high RPS builds to keep everything more consistent. This does not effect performance negatively in any way on any build no matter the RPS or sector gear, strictly meant to improve performance on high RPS.
PRODUCT DETAILS
- Inner diameter: 6.03 millimeter
- Polished finish, Mirrored Finish if Lapped
- Precision, hand fitted R-Hop patch
- R-Hopped glued into hop window
- Umbrella Armory specific R-Hop 2.0 patch design and material
- Requires flat bucking and M-Nubbed / R-Hopped style hop up arm for use (included/assembled with full set)
- Use .28 gram BBs or heavier to see optimal long range advantage over non R-Hopped comparisons
MATERIAL
- SUS 304 stainless steel inner barrel
- Rubber R-Hop patch
DISCLAIMER
- Lifetime warranty
- Made to order for some variant options, up to 4 week lead time
- Manual/FAQ
- Return policy
LAPPING SERVICE:
What is it? Its a grinding method to microscopically remove material from the surface of the bore. Using extremely fine diamond compounds, we can remove material from the inside of the barrel that is uniform and consistent throughout the bore. Leaving a mirror-like finish that's very time consuming to achieve on a steel barrel.
As a result, the following happens.
- ~2% increase in FPS
- Increased shot to shot FPS consistency
- Increased accuracy downrange
- Easier barrel cleaning/less stubborn residue buildup
Below is an example of a Prometheus Barrel 6.03mm, pits, and bore marks can be seen within the barrel. With lab instruments we've measured this low/high spread as 5 microns. These microscopic holes tend to catch BB residues, and increase the internal friction of the barrel slowing down the BB.
Below is that same barrel with our lapping process done to it. We're able to reduce the internal bore surface roughness to below 0.5 micron. Resulting in a mesmerizing mirrored effect on the inside.
B
If you get a high quality barrel from UA. Spend the extra money and get it lapped. I for one have done lapping ans I lap my own barrels. Believe me when I say it's very time consuming. The amount of money UA charges for a lapping of that quality is really good. It's a super super fair price. Yeah you're paying a bit for the barrel itself but take the extra mile and get it lapped. I ordered back in 2020 a 280mm barrel non lapped used it for an entire season and loved it! I started looking into lapping early 2021 because everytime I cleaned my barrel it wasn't super dirty but it was dirty. Took 2 to 4 passes through the barrel for the cloth to not change from clean to dirty. Once I got the proper lapping tools and compounds and lots of practice with old barrels I did the barrel I ordered from UA. It's incredible. The difference between shot to shot consistency isn't thay noticeable after a fresh clean. But the consistency stays back to back I can run multiple games a day or week honestly even a month of outdoor heavy usage and the shot to shot consistency is superb. I'm telling ya spend the extra money and get it done. You will not regret it.
J
I purchased this 280mm krytac crb barrel for my vfc mk18 polarstar f2 build because I like the extended barrel window for more backspin. Let me tell you their R hop 3.0 is absolutely stellar and 100% worth the price! This new patch design has a small slit near the beginning of the barrel which is to vent air pressure on high rof builds and keep up the consistency. I have shot a few mags through my gun to test this and it lives up to its claim! My bbs shoot nearly perfect and I've only shot a few hundred rounds through it so when I reach 5k I know this gun will be an absolute laser on the field! Don't listen to the haters on here who didn't read the fine print. The barrel is worth it and if you want that extra performance the lapping service is the best touch. Here's picture to observe and no this doesn't cause pinch jams as the edge inside is beveled smoothly.
R
Bought this Barrel & R-Hop combo about a couple months ago & all I can say is that this has made my build so Freaking Accurate even on a 275.5mm barrel that's about 10 inches approximately that's insane on such a small barrel! I definitely trust Jordan's expertise & work he does amazing stuff over there at Umbrella Armory. Definitely recommend this product it's a must if you want precision shots. Works best with .32g BB's!! So go ahead & add it to your cart in the meantime I'll be sending you to the dead box from 150ft away!!
B
Made my MTW shoot perfect!
m
I have 3 Rhop barrels they are the best barrels out there. The accuracy is crazy on these barrels. The grouping is amazing.
Thank you so much for your support, and having 3 barrels from us!