Home Forums Hunting & Shooting AR and Tactical Rifles My new 204 build

Aero Precision M4E1 upper
Aero Precision Gen2 lower
Aero Precision 12" Keymod handguard
Aero Precision billet trigger guard
All done in limited edition Battle Worn Titanium Cerakote
McGowen Precision Barrel's 18" 204 custom barrel 1/10 twist set at my contour and threaded 5/8 and fluted mid gas
SLR rifleworks Titanium adjustable gas block
2A Armament Titanium takedown pins
Viltor buffer tube
Tubbs flatwire buffer spring
Spikes T2 buffer
TIMNEY skeletonized trigger
Magpul CTR stock
Magpul Moe grip
WMD BCG Nib-x
Aero Precision mount
Leupold Mark AR 4x12 scope

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Nice! I hope it shoots as well as your last upper!

It's looking promising I'm in the break-in period are you enjoying that upper.

Kingston that place I told you about to buy factory Hornady ammo has it at a Great price right now.

I just got back from the farm in PA where I did some woodchuck hunting. Unfortunately no semi autos allowed for hunting in PA. I shot my Cooper in 204 and Sako 85 Varmint in 223.


Inspired by the initial accuracy of your 204 upper, I got in the slow line for a Larue trigger. It arrived a few weeks ago, but I haven't had time to install it.

I let you know

Now that I have some rounds down the barrel I thought I would check how it was grouping these are 5 shot groups .


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Damn that's some shootin! Nice job and good lookin gun

McGowan isn't known for bad barrels generally. Nice shooting.

Thanks Certifiable.


Thanks Rost495 I am very happy with the McGowen barrel it has been super easy to break in this barrel cleans like butter.

Very nice gun, and good shooting!

I like that Titanium cerakote. Like it better on a Noveske, but..

Nice rifle and shooting. The 40 Vmax is only bullet I run in my 204 now. Shoots great.

I like rifle, but would like better if the handguard were black.....

Thanks guys going to try some 39gr blitzkings see how they do