View Full Version : Barrel weight question
I'm in the process of building a carbine for my fiancee for her birthday, doing an 80% lower, geissele SSA trigger, Magpul's pink furniture and a 16" BCM carbine upper (would have gone with midlength but can't find the pink handguard in that length)
Anyways, while she is physically fit and strong I'm going for a relatively light weight build. Would anyone happen to know the weight difference between BCM's Standard 16" M4 carbine upper and their Standard 16" C8 CFW upper? The barrel profile on the C8 CFW looks like the SOCOM profile, with the Simon Sleeve on the front.
Her birthday is coming up in a few weeks and I would like to get it done before (still have to mill out the lower and get it anodized) should I wait and hope the M4 carbine upper comes back in stock or go with the C8 CFW upper?
The medium profile M4A1 type barrels are noticeably heavier and poorer-handling than gov't profile... even more so with that Simon sleeve on it. If light weight is your goal, I wouldn't get one. Are you stuck on BCM? You could get an M4gery barreled upper built to the same specs from PSA, Colt, DD, or Spikes.
With the sleeve, prolly about five ounces.
Get a lw barrel. The gov't profile is retarded.
Get a LW profile mid-length upper and put the pink XTM covers on it. Better, lighter barrel and still covered in pink.
With the sleeve, prolly about five ounces.
Get a lw barrel. The gov't profile is retarded.This. If you want the best accuracy for a given weight and length, you want a taper from thick at the breech to thin at the muzzle. Having it get skinny and then thick again makes no sense.
ramblnwrek86
08-31-14, 15:12
I'm in the process of building a carbine for my fiancee for her birthday, doing an 80% lower, geissele SSA trigger, Magpul's pink furniture and a 16" BCM carbine upper (would have gone with midlength but can't find the pink handguard in that length)
Anyways, while she is physically fit and strong I'm going for a relatively light weight build. Would anyone happen to know the weight difference between BCM's Standard 16" M4 carbine upper and their Standard 16" C8 CFW upper? The barrel profile on the C8 CFW looks like the SOCOM profile, with the Simon Sleeve on the front.
Her birthday is coming up in a few weeks and I would like to get it done before (still have to mill out the lower and get it anodized) should I wait and hope the M4 carbine upper comes back in stock or go with the C8 CFW upper?
If you're looking for pink furniture Cav Arms does a set standard handguards in pink for midlengths:
http://www.cavmfg.com/AR15-Furniture-Special-Colors_c19.htm
Colt 6720 might be worth looking into.
This. If you want the best accuracy for a given weight and length, you want a taper from thick at the breech to thin at the muzzle. Having it get skinny and then thick again makes no sense.
Which is exactly why the M4A1 or C8 SFW profiles should be good shooters.
I'd get the C8 SFW. BCM doesn't make a light weight carbine length gas system upper (like the Colt 6720) any longer.
Thank you for the replies guys, I already have the Magpul pink furniture on hand and the Cav arms stuff isn't the same shade of pink. In looking around I saw that Grant sells the Colt lightweight 16" carbine stripped upper, but its currently sold out. I shot him an email seeing if he has an ETA on them. So I'll go with that from him more than likely.
Which is exactly why the M4A1 or C8 SFW profiles should be good shooters.
I'd get the C8 SFW. BCM doesn't make a light weight carbine length gas system upper (like the Colt 6720) any longer.The M4A1 profile still has a little bit of a neck in front of the front sight, but you're correct that it's far better than an M4 profile. I don't know what the C8 SFW profile is.
I tend to prefer somewhat lighter profiles than M4A1 for run and gun semiauto guns, even if some people call me a weight weenie because of it. http://ballisticadvantagellc.com/?product=5-45-14-5-hanson-midlength-1 is what I run, which seems like a nice compromise for weight to me.
The M4A1 profile still has a little bit of a neck in front of the front sight, but you're correct that it's far better than an M4 profile. I don't know what the C8 SFW profile is.
I tend to prefer somewhat lighter profiles than M4A1 for run and gun semiauto guns, even if some people call me a weight weenie because of it. http://ballisticadvantagellc.com/?product=5-45-14-5-hanson-midlength-1 is what I run, which seems like a nice compromise for weight to me.
Maybe I'm forgetting something, but what do you mean, "a little bit of a neck"?
I ended up getting her a DPMS lightweight upper, it was 360 bucks thru Midway and in stock. I figure since she isn't going to be putting thousands of rounds thru it a year it should serve her just fine. Thinking I might replace the A2 flash hider with a BCM comp.
Nothing wrong with that. It's not like you need mil spec everything for a casual use rifle. Hope she enjoys. You should post pics when you get it together.
Maybe I'm forgetting something, but what do you mean, "a little bit of a neck"?By neck I mean that it narrows and then widens again. I don't know if it's a commonly used term when it comes to firearms.
Are you referring to the M203 cut out?
I would recommend a ELW contour BCM w/KMR. It will be nice and light, handle well, and you could get mid-length.
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