Need advice on building AR15 Lower

[charliebrown1999]

I am about to click the button to purchase an Aero Precision M4E1 20" Wylde 223 SS fluted bbl complete upper. I will also purchase their BCG. My question is will that upper "run" with their M4E1 lower with rifle buffer and spring and Magpul MOE rifle stock??? The upper has a rifle length gas system. I thought matching rifle length gas system with rifle length gas system. However I am a newbie with AR15 builds.

 

[Evolution 9]

Yes, it will run. You are correct that matching the two is best for reliability but many people have been able to use carbine lowers with rifle length uppers with success.

 

[Son of Dorn]

When you say "Magpul MOE rifle stock", do you mean this one?

Or this one?

Either way, your rifle-length upper will work just fine with a carbine or a rifle lower, but you shouldn't use a rifle-length buffer/spring in a carbine-length tube. The rifle ones are longer and the bolt may not cycle or lock back 100% correctly. Like @Evolution 9 said, you can use a rifle-length upper on a carbine lower just fine; the Diemaco/Colt Canada C7A2 comes from the factory like that. On the other hand, using a carbine upper with a fixed-stock rifle lower like on my own AR works well too and having a solid stock is more comfortable imo.

 

[charliebrown1999]

The second picture is the stock that I intend to use. I have in my cart the rifle length buffer tube, buffer and spring. So maybe I am good to go.

 

[Evolution 9]

You should be good to go.

 

[Son of Dorn]

The second picture is the stock that I intend to use. I have in my cart the rifle length buffer tube, buffer and spring. So maybe I am good to go.

If it's all rifle, you'll be A-OK.

 

[charliebrown1999]

thanks for your advice.

 

[MountainRogue]

GTG

 

[tinman52]

I agree with the other guys I have that stock on two of mine