Question on Uppers ?

[GMG]

On the Del-Ton site they list their flat top uppers several different ways.

1. Flat top upper with T-Marks (standard)

2. Flat top upper with M4 feed ramps ($25 extra)

Is one better than the other for mounting gadets? Different height?

Thanks in advance.

[jgraham15]

On the Del-Ton site they list their flat top uppers several different ways.

1. Flat top upper with T-Marks (standard)

2. Flat top upper with M4 feed ramps ($25 extra)

Is one better than the other for mounting gadets? Different height?

Thanks in advance.

T-marks are the numbers on the rail on top of the upper receiver which is standard so it comes with them automaticaly. M4 feed ramps are extended ramps on the barrel extension (the part the bolt meshes with) and the extended ramps help rounds load into the chamber easier. If it was me I would pay the extra $25 and get the one with the M4 feed ramps.

[Mail Clerk]

On the Del-Ton site they list their flat top uppers several different ways.

1. Flat top upper with T-Marks (standard)

2. Flat top upper with M4 feed ramps ($25 extra)

Is one better than the other for mounting gadets? Different height?

Thanks in advance.

GMG,

For feeding reliability get the one with the M4 feed ramps. Much better compared to the old versions. Mounting gadges, a flat top is a flat top. Nothing different as they're allthe same. Their only refering to different versions.

Mail Clerk

[nobs11]

GMG,

For feeding reliability get the one with the M4 feed ramps. Much better compared to the old versions.

Mail Clerk

M4 ramps show questionable reliability improvement for 223.

[jgraham15]

Here is a picture of the feed ramps off of AR15barrels.com's website.

[jgraham15]

This is a small picture but the numbers on the receiver are t-marks

[jgraham15]

M4 ramps show questionable reliability improvement for 223.

I have heard they were really designed to help in burst or full auto but I just figure anything that could help is worth the few extra dollars.

[GMG]

Thanks guys!

[fotoman]

Wow... I didn't know... Thanks !!!!!

[oldrifle]

go w/ m4 feed ramps

[railroader]

My del-ton upper has the standard feed ramps and hasn't had any issues so I wouldn't know if M4 ramps would be an improvement. It's only a $25 upgrade so if it's something you would want go for it. Mark

[Boots]

it's amazing looking at the side to side comparison (never compared my M4 to non-M4 AR's) how there isn't that drastic a difference, but how that little bit more cut-out makes the difference in more reliable feeds.

[aplinker]

There seems to be a huge wave of new people on Calguns.

Please, please, please spend some time on m4carbine.net.

Try to understand what they're talking about here and why:

http://m4carbine.net/showthread.php?t=6642

http://m4carbine.net/showthread.php?t=7009

[Lateralus]

I have heard they were really designed to help in burst or full auto but I just figure anything that could help is worth the few extra dollars.

Heres the short story (as I understand it):

The original M16 had a 20" barrel. The gas was siphoned way further out and therefore burned less hot. When they shortened it to a 16" M4, the gas port was moved closer to the action, resulting in what we now know as "Carbine Length" gas as opposed to "Rifle Length" gas.

In addition, a shoter collapsible stock was added. Then came the shorter carbine buffer tube and shorter, lighter carbine buffer. The whole system resulted in gas burning MUCH hotter, and the action cycling faster and more violently. Failures to feed was the inevitable outcome of this re-working of Stoner's original system.

To help the system feed reliably under rapid and sometimes fully automatic fire with the quicker action, extended feed ramps were cut into BOTH the UPPER RECEIVER AND BARREL. Hence said "M4" feedramps.

Any questions?

[jgraham15]

There seems to be a huge wave of new people on Calguns.

Please, please, please spend some time on m4carbine.net.

Try to understand what they're talking about here and why:

http://m4carbine.net/showthread.php?t=6642

http://m4carbine.net/showthread.php?t=7009

That is a lot of awesome info!!!

Thank you for the links!