So I am pretty sure i am going to go with a custom delton upper, can someone give me a quick explanation on difference between m4, midlegnth, and plain 16".

i think it has something to do with the gas block that i read but i am stil confused, sorry for all the questions , i just want to make an educated decision and gain more knowledge for future builds.

 

thank you

 

http://www.del-ton.com/ProductDetails.asp?ProductCode=CU101 (m4)

http://www.del-ton.com/Custom_Upper_p/cu104.htm (mid)

http://www.del-ton.com/Custom_Upper_p/cu100.htm ( 16" )

I believe the m4 inyour reference has to do with which feed ramp style is offered. There is a difference between the way m16 and m4 feedramps are machined. Mid-length is a reference to the length of the gas system used.

I believe the m4 inyour reference has to do with which feed ramp style is offered. There is a difference between the way m16 and m4 feedramps are machined. Mid-length is a reference to the length of the gas system used.

yup. m4 feed ramps are used for carbine gas systems, helps with cycling ammo, but they seem to be standard now regardless of the gas system.

however!

from his links

the m4 is the short gas sytems(carbine)

the mid is mid-length gas system

and the 16" well i have no idea they are all 16"s however it looks like a carbine gas system from the picture.

 

Read the options of the pull downs, its all there.

Thanks jack Thats exactly what I was looking for

I'm not an technical expert on feed ramps, though it is a big debate. Here is a technical discussion on them from M4C forums.

Personally, even if they provide the slightest boost to reliability, I would prefer to have them. In this day and age, you don't really pay anymore for them (as noted, they are pretty common place).

 

As for mid-lengths, the whole idea is that it causes less wear and tear on the internals of the rifle, and, less subtlety, provides a softer shooting rifle. Of course there goes a lot into a softer shooting rifle (buffer, brake, ammo, etc), but it is a definite plus from what I've heard of those who own one, and from the rifles I've shot myself.

be weary of the heavy barrels, they aren't joking when they say heavy.

be weary of the heavy barrels, they aren't joking when they say heavy.

 

Not that much heavier, and throw off heat better and tend to be a little more accurate,

thanks for the good information as always, im going to ask them at delton today the exact weights from heavy to light weight im interested to see the actual difference

Take a look at PSAs new 16" mid they just came out with, IMHO its a better deal than a delton upper. http://www.palmettostatearmory.com/2533.php

Not that much heavier, and throw off heat better and tend to be a little more accurate,

There about a lb heavier then a lightweight. It's not automatic so heat shouldn't be much of an issue, and while they are a little more accurate i see the weight savings to outweigh it. Kinda like a chrome vs non-chrome line. Depends on the use.

There about a lb heavier then a lightweight. It's not automatic so heat shouldn't be much of an issue, and while they are a little more accurate i see the weight savings to outweigh it. Kinda like a chrome vs non-chrome line. Depends on the use.

 

 

I asked Delton yesterday and thats exactly what they said, if im just target shooting with it (and preparing for zombie apocalypse) is the lighter barrel sufficient ?

Take a look at PSAs new 16" mid they just came out with, IMHO its a better deal than a delton upper. http://www.palmettostatearmory.com/2533.php

 

is this legal bc it has a flash hider??

You would have to get that flash hider removed and a brake/comp pinned on.

You would have to get that flash hider removed and a brake/comp pinned on.

 

Thats how I did mine.. I put in the notes to leave the FH loose.. and they did..

I asked Delton yesterday and thats exactly what they said, if im just target shooting with it (and preparing for zombie apocalypse) is the lighter barrel sufficient ?

 

a pencil thin barrel will be fine for what 95% of shooters need. you only need to worry about more heat dissipation if youre constantly doing full auto mag dumps. you can never cycle a semi fast enough to worry about it, and even if you could, why waste all that ammo.

 

if youre into bullseye target shooting, then you shouldnt get a 16" barrel anyway.

a pencil thin barrel will be fine for what 95% of shooters need. you only need to worry about more heat dissipation if youre constantly doing full auto mag dumps. you can never cycle a semi fast enough to worry about it, and even if you could, why waste all that ammo.

 

if youre into bullseye target shooting, then you shouldnt get a 16" barrel anyway.

I have a rra heavy 16" and really want to re-profile it, but i'm probably going to end up with a 14.5" bcm lighweight with a break at somepoint, or im going to just build a new upper, the heavy barrel offsets the feel of the rifle and i may use it as a bench rest/backup.

 

Some people who havnt felt the difference may not realize how much torque that extra LB puts on your wrist and one hand handling of the rifle is difficult, like say you want to quickly go prone and get up, you will find it tiring to keep the muzzle up.

A note on Del-ton I ordered some parts from them last week and there customer service girl Megan was great. She emailed and called me a few times as something wasn't in stock, then I wanted to add something to the order and she was quick on the replies and got everything correct. The work that they did on the pin and weld of the brake was excellent. It took me and a few other people some time to actually find the weld. The shipping was fast and the prices were very good. I reccommend them highly!!