Question regarding Buffer for 7.5" AR15

[jonathonh]

Just had a quick question regarding which buffer I should start with for my 7.5" AR15 build.

I have ordered a Spikes T3 Heavy buffer, as the T1 and T2 were both out of stock. Is the T3 too heavy for my setup?

Here's a little bit about what I've got so far:

- FA BCG
- BCM Gunfighter charging handle w/ Mod 3
- Spikes Tactical 7.5" Lothar Walther Barrel w/ pistol length gas system
- DPMS low profile gas block
- Motiuk custom lower receiver
- Spikes Tactical upper receiver
- Levang Linear Comp. w/ Dlask XB1 on the way to see which performs better
- Doublestar lower parts kit
- Milspec buffer tube, and an assortment of buffer springs.

the rest (grip, stock etc.) shouldn't have an impact on which buffer I use so no need to include that info I suppose haha

Figured I'd kill two birds with one stone...

My second question is (being my first complete build), is there anything in particular I need to do with the BCG or bolt before firing the rifle for the first time? I have heard of checking the head spacing etc. and have watched the Brownells clip, but I don't have a head space gauge. It is a brand new BCG purchased from CTS.

Thank you in advance for your info and comments

 

[fenceline]

Have run a carbine and a heavy carbine buffer in mine. No issues. If in doubt, heavy will be fine.

 

[GLOCK_PERFECTION]

Your buffet isn't too heavy for your setup. Pistol lenght gas system require heavy buffers.

Personally I've never checked headspace. I don't know if it's ok, but I never did it.

 

[Suputin]

I have run ultra heavy custom buffers on short barreled carbines with no ill effects. The AR gas system is designed to accept as much gas as it needs and then shut off.