Starting a Target/Bench AR build

[GarandThumb]

I don't know who has seen the new AA ad in magazines lately, but the new GDMR configuration is really sleek. This is what I am thinking of for my 22" fluted build, only I'll probably go with a longer handguard and Seekins billet set.




Here is one that I helped a fellow forum member with:

That is sharp looking. Is the barrel blued or painted (duracoat/cerakote)?

[LRRPF52]

Everything on the outside that is metal is Cerakoted on the FDE gun you see. The barrel is Cerakoted black. I shot a rapid .6" group with that rifle last week, and 4 of the rounds were literally in .3". The 1st round opened the group to .6". I shot it on a cadence as fast as I could index the reticle of his NightForce benchrest scope and break the JP trigger consistently each time. He shot a .5" or less 5rd group with it as well.

Looking at the groups, it was actually .642" edge to outer edge, making it a .378" Center-to-center group, which is .361 MOA. That's crazy for a 5rd group rapid-fired at 100yds.

[mburnz]

Vortex is 35% off 2 items per category per year for active/retire military, law enforcement. It is off MSRP so you'll start a touch higher but the bottom line is a better price. $10 flat rate shipping. You can email them and ask or PM me and I'll forward you the form.

[KentuckyBuddha]

Wow, I wish I had known that earlier! JP gives a substantial military discount as well.

[GarandThumb]

Minor update on this build. Got the lower put together. So far its looking good. Will be ordering the scope and mount next week, possibly the float tube too.

[video]https://www.youtube.com/watch?v=9vK1NXDDSK8[/video]

[GarandThumb]

Got another update, getting close!

Since the last update I have picked up the following:

Vortex HS-T (minor problem here)
LaRue LT 745 mount

I ordered the White Oak Armory float tube last week, should be delivered tomorrow.

I ordered the barrel from Lilja last night, went with the AR24 profile.

All that's left is the gas block, gas tube, bolt, bolt carrier and a couple of tools. I'll need a spanner wrench for the barrel nut and something for the barrel install.. thinking about going with the magpul BEV block.

The minor problem I'm having with the Vortex HS-T? I tried it out this weekend on my savage chambered in 260, took it out to 1000 yards. The scope worked great! Now I want to leave it on the savage, lol. I had a standard Viper on the savage so I may use that on the Grendel... for now.

[GarandThumb]

Finally got the barrel installed. I did lap the upper receiver and bedded the barrel extension with loctite 243. I used white lithium grease instead of anti-seize for the barrel threads and tightened the barrel to 60 foot pounds.


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The gas block should arrive Monday. After that I just need the bolt and bolt carrier.

[GarandThumb]

***Update***

Just finished it this weekend.


Here is the parts list:

Upper/Lower: Aero Precision
Barrel: Lilja ar24 profile with thread protector
Float Tube: White Oak Armament Varmint
Gas Block: White Oak Armament match (non-adjustable)
Gas Tube: DPMS
Bolt: Underground Tactical (from Lilja)
Bolt Carrier: APF NiB
Port Cover: Tactical Junkie
Pistol Grip: Ergo
Forward Assist: DMPS
Lower Parts: CMMG
Trigger: CMC Flat
Charging Handle: BCM
Stock Kit: Magpul
Scope Mount: LaRue LT745


Scope: I purchased a Vortex HS-T intended for this rifle but it found a home on my Savage 260. For now I'll run this standard Vortex Viper but plan on picking up another HS-T

Also picked up two mags, one AR Stoner and one Alexander Arms, both 10 rounders. All told the whole build set me back $1800 (not counting scope). I will be taking it out next Sat to break in. I plan on using cheap steel cased wolf for the break in so I may not get a good idea on how well she shoots until the second outing. My expectations are 1/5 moa with tuned reloads.. hopefully my expectations are not too high