First ar15/m4 build

[Pepe-lepew]

Do you know what year it might be? Feel like I'm learning a lot today

About 2006 or 2007. It was manufactured after the ban ended.

 

[Pepe-lepew]

About 2006 or 2007. It was manufactured after the ban ended.

I forgot, if it has the original barrel, pull the hand guard and look at the barrel date. They followed Mil spec, included dating barrels.

 

[Triggasylum]

About 2006 or 2007. It was manufactured after the ban ended.

So during this time they also had the civilian version? And this is the le variant?

 

[Tony617]

View attachment 1086151
These are on a standard 16" barrel. The bayonet lug is there because it cool looking. Or because it's easier to just use the same part across all rifles instead of making multiple designs of front sights

Elzetta Design make a flashlight holder for the bayonet lug.

https://elzetta.com/product/zfh1500



I use this mount and also an Elzetta Design light.

 

[Triggasylum]

Elzetta Design make a flashlight holder for the bayonet lug.

https://elzetta.com/product/zfh1500

View attachment 1087047

I use this mount and also an Elzetta Design light.

That's awesome. How does it hold up to recoil? Any issues with it?

 

[Tony617]

That's awesome. How does it hold up to recoil? Any issues with it?

I bought the bayonet light holder years ago and take my AR to range with the light on and have not had any any all ever. I have an older model of the Elzetta light and they have upped the number of lumens since I bought my light.

 

[Cerberus Group]

That appears to be a large pin model...meaning both the hammer and trigger pins are .170" vs .154"

90s to early 2000s

 

[Ops]

just the normal 6920 during the awb. having a le means its a better made gun

 

[Triggasylum]

I just wanted a rifle that would be reliable without having to build it from scratch or modify the internals so on and so forth.

just the normal 6920 during the awb. having a le means its a better made gun

 

[Cerberus Group]

It will be reliable.

I've got one from the same era...on it's third barrel. The upper and lower still spec out like new.

 

[Triggasylum]

It will be reliable.

I've got one from the same era...on it's third barrel. The upper and lower still spec out like new.

What's it take to go through a barrel?

 

[osprey]

What's it take to go through a barrel?

Many rounds. It is all related to rate of fire. Could be as few as 3500 rounds or
as many as 35000 rounds. Many people will never wear out an Ar barrel in their life.

 

[solv3nt]

Along with the "thing that goes up" whatever that is

Please, this is a family friendly forum...

 

[msgriff]

What's it take to go through a barrel?

There is a company in Las Vegas, Henderson Defense, that owns/operates "Battlefield Las Vegas". Tourists can rent just about any firearm known, including full auto, and shoot until their wallet is empty. Some 5.56 barrels there can last 80k - 100k before keyholing, some make it less than 10k. The data is very interesting for all the various parts life.

 

[DLS]

Or the use of the firearm.

NRA Service Rifle competition has a 600 yard slow-fire stage. Shooting heavy bullets very fast (higher velocity equates to less wind drift) is hard on barrel throats.

A competitor will start noticing non-called flyers long before the typical AR shooter would ever notice a drop in accuracy.

Once those flyers start appearing , typically that upper will be relegated to short range practice and a new barrel will be put into service shooting the full distant events.

 

[Cerberus Group]

What's it take to go through a barrel?

There's a few factors that come into play...quality of the barrel, velocity of the rounds, heating of the barrel etc.

I never got keyhole rounds, the groups opened up around 20k. The groups were acceptable til around 25k+. Installed another Colt barrel, got about the same life out of it.

The 3rd barrel is a Ballistic Advantage Hansen pencil profile...have 10k through it. It's been mostly retired, I use it as a loaner rifle.

But what's also something to look at, is the lack of anti-rotate pins all this time..and the trigger and hammer pin holes in the lower still gauge correctly.

 

[mhayd93]

If you've got a carbine length gas system, which you probably do, that bayonet lug isn't gonna be very useful. Unless it also has a pinned and welded 14.5" barrel. Otherwise, it's a colt and some people will nut in their shorts over it. If you're brand new to the platform, just keep your rifle as-is and learn it before you start mucking with it

This is worth repeating! The AR-15 can very quickly become a money pit. Before adding any aftermarket accessories or swapping components out, get beyond comfortable with it in its "standard" form. Then, you can figure out exactly what you like/dislike, which will help make more informed and purposeful upgrades!

 

[Diamondback]

The reason those lugs are there is less addition than the cost of hand-labor to cut 'em off. If they only have to order one A2-height FSB and one lo-pro gas block and can cover the entire catalog between just those two parts, that helps immensely with shaving costs and going for "economies of scale."

Sorta like why you will NEVER be able to build an AR for cheaper than you can buy one, all of the assemblers buy their small parts by weight not unit-count, and usually by the containerload.

 

[monkeybutler]

That appears to be a large pin model...meaning both the hammer and trigger pins are .170" vs .154"

90s to early 2000s

I wondered if that was the case.

 

[Triggasylum]

Finished!