My First AR Build . . . HELP!

[BullseyeBoomer]

Hello my fellow AR fans...

I got a good deal on a PSA "Premium" upper with 20" barrel and rifle length gas tube. I'd like to install it on a Spikes Tactical lower that came with an M4 carbine buffer, 6-position tube, and spring assy. My question is this: Is the carbine buffer and spring compatible with the rifle length upper's gas impulse?

The second question I have is this: is there any way to make the carbine buffer, tube, and spring work with an A2 fixed butt stock? I'd like to build this rifle to resemble a Vietnam era M-16, but I understand the carbine buffer, tube, and spring may not be compatible with the A2 fixed butt stock. Or should I just buy an A2 butt stock, buffer, tube, and spring as a complete kit?

Any thoughts or advise would be much appreciated.

Semper Fi!

 

[BangBang]

mtdawg169

 

[mtdawg169]

Hello my fellow AR fans...

I got a good deal on a PSA "Premium" upper with 20" barrel and rifle length gas tube. I'd like to install it on a Spikes Tactical lower that came with an M4 carbine buffer, 6-position tube, and spring assy. My question is this: Is the carbine buffer and spring compatible with the rifle length upper's gas impulse?

The second question I have is this: is there any way to make the carbine buffer, tube, and spring work with an A2 fixed butt stock? I'd like to build this rifle to resemble a Vietnam era M-16, but I understand the carbine buffer, tube, and spring may not be compatible with the A2 fixed butt stock. Or should I just buy an A2 butt stock, buffer, tube, and spring as a complete kit?

Any thoughts or advise would be much appreciated.

Semper Fi!

Not compatible. You'll need to swap out the receiver extension, buffer & spring for a rifle extension, rifle buffer and rifle length spring.

Sent from my SM-G955U using Tapatalk

 

[mtdawg169]

But the upper should run fine with the current set up until you get the parts for the A2 stock install.

Sent from my SM-G955U using Tapatalk

 

[AO3CoxUSN]

Your best bet is to get the A2 stock, tube and spring. The carbine tube has the adjustable notches that will not fit in an A2 stock. The buffer you will need a rifle type.
Good luck with your build.

Here's mine

 

[BullseyeBoomer]

Not compatible. You'll need to swap out the receiver extension, buffer & spring for a rifle extension, rifle buffer and rifle length spring.

Sent from my SM-G955U using Tapatalk

Thanks mtdawg, I appreciate the heads-up on the receiver extension!

 

[BullseyeBoomer]

View attachment 1223886 Your best bet is to get the A2 stock, tube and spring. The carbine tube has the adjustable notches that will not fit in an A2 stock. The buffer you will need a rifle type.
Good luck with your build.

Here's mine

Good looking rifle! That's what I want mine to look like when I'm done... Thanks for the info!

 

[AO3CoxUSN]

Thanks,
The Bakelite furniture was the hardest to find, don't forget the 3 prong flash and tear drop forward assist, for period correctness.

 

[BullseyeBoomer]

Thanks,
The Bakelite furniture was the hardest to find, don't forget the 3 prong flash and tear drop forward assist, for period correctness.

Thanks AO3, much obliged!