Im thinking of getting a CA M15a4 Rifle version(m16), but i was wondering if the M15a4 tactical carbine gets just the same range, caus if it does ill just get the tactical carbine, tired of my small MP5 and want to get something bigger now.
well, i believe the carbine versions of the M15 have a 315mm barrel or something like that, the rifle version has a 509 mm barrel. The barrel length significantly effects the range and accuracy and thats a 20 cm difference, quite a step.
yea if you're looking for range....go for the CA rifle...
or you can upgrade the carbine. more fps = more range. a tightbore will also ad 10 to 15 fps and increase groupings which will of course, lengthen your effective range.
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TM M16A1/VN/A2 barrel is 509mm
there would be a slight difference in range i think with a longer barrel. a longer barrel will up fps which increases range. with a longer barrel, more air is actually utilized and not wasted to push the bb. In a lot of guns, the actual air volume given by the piston and cylinder isn't fully used because the barrel is shorter. take the kjw mk23 for instance. without its silencer/inner barrel extension, it only gets about 320 fps but if you attach the silencer/inner barrel extension the fps jumps to like 400+ fps. so correct me if i'm wrong but a stock m16a2 would fire marginally faster in fps than an m4a1 just because it uses more of the air volume (which is also why shorter guns like the mp5k shoot lower stock fps than the carbines and rifles). this of course would marginally increase range in the longer barreled gun. but marginal is like 5-10 fps and 5-10 feet of range so theres not much difference.
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your right about that stuff anguir, just Shawn was saying if they have the same FPS but different barrel lengths there shouldnt be a range difference.
big snoop was right. hop usually negates the effects of barrel length and gravity, for a period of time. fps helps a bit too, but not as much as you would think.
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its basic physics, if you have a longer barrel there will be a better accuracy than with a short barrel. however, if you upgrade your gun that has a shorter barrel you can negate the barrel length of the longer weapon.
i wouldnt say this is basic...
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Hrm, was debating if I really wanted to get into this discussion. There's a lot of factors used to determine range/accuracy, and barrel length is not the only determinant. As with any upgrades, it's always about the entire package, not just any one factor. A longer barrel does not always make a weapon more accurate at range. Good example? My P90 that I had shooting at around 420 fps. That was with a Systema 363mm M4 inner TB barrel. Using the stock 247mm barrel, the velocity dropped under 400 fps, but the gun was much more accurate at similar ranges. Why? Probably because the barrel was extended through a silencer and was not supported past the muzzle, so it had more resonant vibration running through it when the gun was fired and the same vibration was transferred to the bb, which affected it's flight. On the other hand, the stock 247mm barrel was fully supported, with no additional length free floating in front of the muzzle. It was mounted solid, and the result was a more accurate gun at similar distances.
wait wait.. i was thinkin.. about the bb leaving the barrel before the piston has moved all the way foreward.. wouldnt it only take the distance that the piston moves forward for the bb to reach its maximun velocity? like the cylinder's length.. because i dont see how the bb would travel faster than the air pushing it forward..
No. Pressure continues to build/maintain behind the bb until it has left the barrel if the cylinder/barrel volume is proporational. If bb's reached their peak velocity upon initial piston travel, then you would see no additional velocity gains from a bore-up cylinder set. Here's another good example. All of these guns were upgraded with nothing more than an M100 and a set of metal bushings...
ooo i get it now haha so the cylinder volume is directly related to the barrel length.. why didnt i think of that
