SACair Forum

inner barrels

May 20, 2008 3:56am
on my m15a4 its at 375 fps if I put a systema inner barrel in it would it increase the fps or decrease it? Or would it stay the same?
[quote="Steele"]Thats a hot weapon,Your safety should be on at all times on base.[/quote]
May 20, 2008 4:40am
m15a4....not that specific, brand name please?
May 20, 2008 4:45am
[quote="cagedconner"]m15a4....not that specific, brand name please?[/quote]
"We'll bomb them back to the stone age" General Curtis Lemay ,USAF
May 20, 2008 5:13am
[quote="Sniperman"]on my m15a4 its at 375 fps if I put a systema inner barrel in it would it increase the fps or decrease it? Or would it stay the same?[/quote]
May 20, 2008 5:17am
It depends on other factors. I have a CA inner barrel in my AK, but due to a custom thing I wanted with my AK, I took off about a inch and a half off the outer barrel. It currently has a M4 lenght 6.04 TB in it, and I'm still shooting the stock FPS of 320 w/ .2s
May 20, 2008 6:54am
what spring you using???? might be able to tell you. well in mine i'm using a sp100 and getting about 380 with a Prometheus 6.03 TB. also depends about how good your hop seal is.
"1 shot 1 kill"
May 20, 2008 9:36am
It should increase 5-10 fps, but the biggest benefit comes from added range and accuracy, not fps.
May 20, 2008 6:28pm
then again another big factor is the hop seal. if your hop unit is garbage then the barrel will you no good. 8)
"1 shot 1 kill"