Prometheus 6.03 EG Tight Bore Inner Barrel for Airsoft AEG by Laylax (Model: Standard / 550mm)

"Well, your inner barrel for your KWA M4 is approx. 10.75 inches. Turn that into Millimeters, you have 273.05 mm. The end of your inner barrel should end somewhere before it reaches the end of your flash hider. Typical flash hider is what...about a couple inches, 2.25..your inner barrel goes half way through that about making it about an 1.25 inch into your flash hider. So here goes the math...that 1.25 inch = around 32 mm. take that off of your inner barrel length of 273.05. So 273.05 - 32 = 251.05 + 110mm (Your King Arms Mock Silencer length) = 361.05mm. Almost the typical inner barrel length of an M4 which is 363. But you want to go less that 361.05 to avoid getting a barrel that is too long and poking out of that suppressor you have. So buy one that is as close as possible to that 361.05 minus maybe 10 or so millimeters. If you really want a Prometheus barrel, go with this 300mm barrel.http://www.airsoftpost.com/product_info.php?cPath=24_-
72_378&products_id=24384. Otherwise I'd suggest http://www.airsoftpost.com/product_info.php?cPath=24_72_376&-
amp;products_id=24367. It's a 310mm tight bore by Matrix. But before you go on what I suggest...I would first take your gun apart and do all the measurements yourself. I did that when I wanted to get an inner barrel for my A&K SPR MOD 1, and without actually measuring it ,I wouldn't have come close to getting a perfect length barrel for my gun. Hope this helped you out some. Goodluck in your airsoft adventures.

"would this barrel give me gun any better accuracy if i already have the same length barrel and its a 6.03??????????

"Always buy prometheus barrels. They are definitly the best barrels around, no quesions asked! They have no break in period and are very, very accurate. This short ass 285mm barrel shoots almost as consistant and accurate as a sniper barrel that's around (550mm-600mm)

"i got this for my ics cqb pistol and it works great. my fps increased ( i think cause thats what tight bores do) my gun shoots in streams with its lipoly. but the orginial barrel for my ics pistol was bigger than this one. so id recommend anyone in my situation to buy a larger one and cover it up with a silencer. it looks cool and you get better accuracy do to longer barrel. it feels and looks amazing as well. great buy but its price is a little too much. if your want a cheaper one than buy the jbu ones they are most recommended rather than the Prometheus barrels. its just that prometheus uses a new way of making there barrels and so thats why they are so famous and all.

"Probably the best tight bore barrel on the market for AEG's. worked perfect in my Classic Army M15 CQB seal with a silencer extension. A+++ for Prometheus! I'm buying another for my M15A4

"i just have a quick question i just recently got a Echo1 G36c and im thinking about getting a tight bore and what the best brand to get for my gun is
Thanks

"Very nice barrel. Smooth and tight, with spectacular tolerances. Probably tied with DBC barrels for value for money. However, these barrels are probably more accurate than DBC barrels, due to their tolerances, but the FPS gain isn't as high. Definitely worth the money.

"Nice product. Practically speaking at this length, it doesn't make an enough accuracy change to tell the difference from a 6.05mm.

"The product is great, my only issue is that the krytac bucking i got with this did not want to slide all the way on it and i had to spend about 30 min working it on to the barrel without forcing it on.

"these are probably the best 6.03 barrels on the market, but to be honest the improvement over the stock krytac 6.05 is very minimal, about the same range, and slightly tighter groupings (with .3 bbs) I think it would really benifit from a r hop or what ever bizarre hop up everyone and there grandma is using these days, never mind the fact that these barrels were designed for it. if your particular barrel is out of stock I would not sweat it because stock krytacs are pretty much the gold standard in allot of ways, accuracy is one of the best on market out of the box.

quick side note, these do come with o rings to stabilize the barrel

"The barrel it's self is very nice. Just make sure you clean it before you install it. It gave me about 40 extra feet in my range. Now as far as fitting the krytac spr. I have the mk1 spr and this barrel is too long. Luckily my flash hider covers it but the 0-rings aren't even in the outer barrel. If you remove the flash hider this inner barrel sticks out about 1 1/2".

Pros: great grouping and range. Very strong.

Cons: doesn't properly fit the Krytac SPR as advertised.

"Just for a reference to the above by Russel... 407mm is NOT 13 inches...it's roughly 16.02 inches.

"This barrel while advertised for a G36 was shorter than my stock barrel in my KWA G36c. The stock barrel once removed from my gun was 262mm. While this seems to be a good overall barrel I did not see a huge difference between this and my stock barrel. If you go with this barrel I would recommend going with a 285mm barrel, I will still be covered by the flash hider.

"Yes this will fit in your CA g36c...and by the way to the person in front of you..go with a systema barrel..they are great and not to expensive

"i have a kwa m4a1 and have a King Arms Light Weight Slim Mock Silencer - 30 X 110mm and want to know if this barrel will fit and not stick out the silencer. please respond