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.
Need advice on building AR15 Lower
- Thread starter charliebrown1999
- Start date
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.
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.
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.
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.
