View Full Version : Last Minute Parts Check...

12-01-2009, 12:33 PM
Gentlemen, it's time for me to buy the last parts of my build. I don't want to come up short when I have all this laid out in front of me, and then I have to drive to Costa Mesa or wait three days for a pin and pay triple in shipping, you know? So, could you tell me what I'm missing?

I have the completely built lower assembly (stock/buffer, grip, parts kit, bullet button). I also have an upper receiver with charging handle and ejection port cover. I believe that's all I have. My purchases will include:

barrel w/ feed ramp extensions
gas tube
gas tube roll pin
the lightweight YHM forearm
bolt assembly.

So, what am I missing? TIA.

Purple K
12-01-2009, 12:35 PM
Gas block/Front sight

12-01-2009, 12:49 PM
Rear sight if it's an A3/A4 upper.


muzzle brake/flash hider (optional)

tools for assembly

Read the instructions for the YHM forearm to make sure you have everything they mention.

12-01-2009, 6:45 PM
you need a full bolt carrier & bolt

Muzzle device

Rear sight/optics

Gas block/front sight base