Madbull Airsoft Black Python 6.03mm Tightbore Inner Barrel for AEGs (Length: 509mm)

"I modified my sig 552 to fit this barrel and it works amazingly. Great grouping (hit my friend from 50 yrds with out trying) and i haven't chronoed it but im pretty sure it raised the fps about 15 or 20. Great barrel for an amazing price.

"My Augs stock barrel was horrible. So i received this barrel yesterday and installed it. The accuracy of my gun increased dramatically. After i installed the M140 i was shooting about 490. Now it's over 500 fps! The problem w/ teflon coating is that it is a layers. And it's possible that a certain part of the barrel might fade away not making the barrel consistent. I highly recommend this barrel!

"Just teamed this baby up with a systema hop up bucking in my JG m4 S System and after a few "break-in" clips its rockin! This barrel is nicely finished and much lighter than the stock tight bore barrel that ships with the JG. It is slightly louder but it is VERY accurate. I wanted a Prometheus barrel, but figured I'd start with the Mad Bull and see what happened. Well I no longer want a Prometheus! I can put five shots in nearly the same hole at 35 feet (indoors) with this barrel, and can hit man size targets at 200 feet pretty easily. I dont have any more drifters when shooting, as the bb just drops down to the target rather than away from it! My fps was bumped a little as well and i got about 20 to 30 feet more distance. I tip my hat to Mad Bull for bringing this level of performance in a product at such a lower price than most of the competition. Thanks EVIKE!!!

"AWSOME.. this barrel is great it boosted my FPS from 410 to 480.. and it makes great accuracy. Buy this barrel its great.

"I just installed this barrel on my KWA m4. I must say that it has shown a significant improvement in terms of range and accuracy. Very sufficient, and cheaper than the other barrels, but very effective. The stock KWA barrel was simply not cutting it. An excellent barrel. I also noticed a significant improvement even more when i switched to .25g bbs. Very nice!

"Great barrels, have a 509 in my ICS m16 and love it (needed the one piece outer barrel to complete it so dont think this is the only thing to improve accuracy and range) and i also have a 650 in my aps2 sniper which is amazing now, easily hit a 5 inch wide tree (suburb area, small trees in the parkways) from 200-225 feet away, as long as there is no wind.

"Great barrels, have a 509 in my ICS m16 and love it (needed the one piece outer barrel to complete it so dont think this is the only thing to improve accuracy and range) and i also have a 650 in my aps2 sniper which is amazing now, easily hit a 5 inch wide tree (suburb area, small trees in the parkways) from 200-225 feet away, as long as there is no wind.

"These barrels are not i repeat NOT teflon coated they are anodized as the person below me stated. anyways on to my review. i put this baby in my KWA M16 and it works beautifully. i also put in a systema bucking but i compared it to the stock barrel with the stock bucking and i tried it with the stock bucking and wow it makes a huge difference. the groupings are extremely tight and my gun is now more accurate than most of my friends with snipers. the stock barrel will shoot about 60 feet before the .25 bb's curve and it isn't very accurate at all. with this barrel and the stock hop up it is accurate for about as far as i can see the bb. the groupings are simply amazing with this barrel. when i tried it with the systema bucking it was even more amazing. if you buy this barrel i would advise tossing in a better bucking aswell unless ur current bucking is pretty good.

one more thing is this made my gun like 2x as loud. i don't know why but since i put it in my gun it is just alooot louder. so if you don't want your gun to be loud i wouldn't advise getting this barrel im not sure if that's true for all guns but i know it made mine louder.

"I got this installed in my JG MP5 RAS, adds FPS, but im not sure how much. Now it goes through the top of a can though. Helps accuracy alot, from about 20-25ft (approx) the groupings were the size of a finger! I'd definitaly buy a Mad Bull tightbore for any other guns I have and I'd recommend it to my friends that are going to be buying tightbores soon.

"This is a barrel for the M4A1 carbine.... it goes right up to the flash hider and is the perfect fit and length inside the outer barrel. I bought this for my KWA M4 and I have to say the accuracy has improved a S*** load!!!! Gives the gun tighter groupings and better range.... An overall buy if you have a stock M4 or M4 tactical variant rifle..

Dimensions: 363mm long (goes right up the egde of the flash hider)
Width: 6.03 mm (perfect width)

"These TBB's are great, any gun I get the have to have one of these, So far I have used them in my G&P M16A4, ICS M4's, Echo 1 M16A1'a. This one is going in my G36C along with a JBU Short silencer to hide the extra.
They may not boost your FPS alot but Damn, the range is increased A LOT! For the price it's unbelievable what you get. I would ONLY recomend using Matrix BB's for them. Thats all I EVER use and have never once had a Jam with them.

"Actually these barrels are anodized, not teflon coated. Madbull's website even details how the V2 inner barrels are made and that they are anodized. Anodizing is pretty wear resistant and hard, it is a common finish for aluminum components. It is a sort of crystalline compound (actually aluminum oxide) that can be harder than steel, thus making these barrels far more durable than any brass barrels (while brass has a lower coefficient of friction, it is rather soft). These barrels actually ought to last a very long time considering how soft airsoft bbs are. I have a V1 Madbull barrel in my M733 that has seen plenty of use but still looks brand new. The V2 barrels have a better bore finishing technique that makes them more precise then the V1 barrels. I only wish they made a 470mm one for G3s to fit my CA M14 Scout

"Ok i got this barrel in the 363mm (M4A1) version, and oh my god...... it had a huge difference compared to my stock CA barrel. My gun shoots much farther, has a little bit more fps(10-15 fps more). The BB grouping is just...wow. I wrote a review on the 509mm because my friend got this on his m16 and he just destroys me in range, so im just gona extend my barrel and put one of these in. I would strongly recommend this over any other brand of barrel. (Altho the promethius looks good).

"Evike is madbull's authorized dealer. So these barrels go from madbull to evike, then to other retailers. Thus, they only have the new version on most items they deal direct.

"and i know that i spelled probably wrong...im most likely going to get this for my echo 1 614...i have a mad bull tight bore barrel in my AK right now and they work great.