flyingfinn

Thanks willbird!

Thanks jtallen83!

Rifle buffer kit arrived today. Inside depth of extension tube is 9 11/16". Spring length approx. 12", OD of coil approx. 7/8". I didn't measure wire diameter. Buffer is as advertised by AP; L=5 3/16" and weight=5.4 oz. Trigger, gas block and tools should arrive tomorrow. I removed ejector assy. today in preperation to measure head space with the go/no-go gauges I ordered. I have not measured for headspace on any firearm before and may have questions when I perform the procedure. But as I understand it I can and should check headspace before I install the barrel in the upper receiver. I've read some threads that mention the use of a field gauge (did not order one). I also read some informative posts by 98Z5V on gas tube length. I ordered one from Aero P. as it is listed as a rifle length gas tube. It is advertised as 15.125" in length, which is contrary to the 15.5" dimension that I read about, guess I'll see where it ends up in relation to the cam pin cutout when installed.

Thanks all! Rifle buffer kit arrived today. Just waiting on Larue trigger, SLR adj. gas block and some tools.

A bunch of parts arrived today! I have a 4 day weekend coming up. Looking forward to some assembling!

Thanks all! I don't have all the tools that I think I should have for my build. Go/No-Go gauges Also after reading some posts in the 308 tools section I followed a link to Brownells for a barrel nut torque tool. Seems to have some pretty good reviews. https://www.brownells.com/gunsmith-tools-supplies/rifle-tools/barrel-tools/308ar-barrel-extension-torque-tool-sku080001040-72374-116250.aspx?sku=080001040 Any other tools did you find you couldn't function without? Such as ejector tool or gas tube wrench.

Thanks for the link! With the Magpul PRS stock I wouldn't need an extension tube with six positions as it is not a collapsible stock. Correct? https://www.aeroprecisionusa.com/m5-308-rifle-buffer-kit This is the buffer kit the AP tech said would work for my application when I talked to him on the phone. I waited on buying it as I am still learning and bought the wrong kit yesterday. Any thoughts?

Aero Precision does have a rifle buffer tube kit. But there is no dimension for spring length listed. Also the buffer length/weight differs from armalite. AP buffer length is listed at 5.3" and weight is 5.6 oz.

This is my first 308 build. Previous experience was assembling a few PSA 5.56 kits. Aero Precision: M5 lower, M5E1 enhanced upper/handguard combo, BN BCG, lower parts kit minus fcg/grip BA 18" heavy profile fluted rifle barrel LaRue MBT Ergo grip, Magpul PRS stock SLR sentry 7 adj. gas block Radian raptor CH, VG6 MD I mistakenly ordered a AP M5 carbine buffer kit, so that will have to be shipped back. I called AP, but was too late order had already been processed for shipping. Great, helpful folks on the phone at AP by the way. Forgive my ignorance; What rifle extension tube would fit my AP application? It was recommended to me to purchase a Armalite AR10 spring with part number ending in "1095". Also it was recommended to me for a buffer selection from DSGarms; ar15 heavy carbine H buffer p/n dsg-4201-0031. I am unsure of barrel length/gas system my buddy built. But this buffer sounds incorrect for my application. There isn't a length measurement on DSG's site only a weight of 3.779 oz. From what I have read so far in research is that a Armalite buffer p/n ending in 1090 with length of 5 3/16" and weight of 5.4 oz would be what "I" need. Thanks all!

Thanks all! Called AP to try and cancel carbine buffer kit. Already processed for shipping. I did talk to someone named Dave on the phone that was very helpful, great customer service. Got a little "click happy" when buying online yesterday. Will regroup and post in correct topic. Thanks.

I ordered the AP M5 .308 carbine buffer kit. I hope it wasn't a mistake vs Armalite. I ordered a BA 18" SS fluted barrel, LT MBT and a Magpul PRS stock.

Hello all! Looking forward to researching and discussing. I am about to start a build. I've already ordered parts. Mostly Aero Precision. I didn't find this site until after ordering. But I did consult with a friend prior to ordering. That is how I ended up ordering upper/lower made by AP. Sure wish I would've found this site before ordering. My buddy is a wealth of info, but lives on the other side of the country. I'm just past the half century mark and find myself wanting to tinker with guns for the last couple of years, rather than just buying and shooting.