Resisting the urge....

[michael_aos]

I bought an Armalite M15A4 specifically for 3-gun. Initially equipped with a Leupold 1.5-5x20mm.

I eventually had the factory barrel swapped for a JP, and got a smoking deal on a used JP free-float tube (thanks Zak). Dropped in a Chip McCormick single-stage trigger. Swapped out the pistol-grip. Eventually went to a TA11 ACOG & LaRue mount. There's a surprising amount of money tied up in that gun.

Bought an Olympic K9GL. Factory floated barrel and SIR quad-rails. Trijicon Accupoint in an Armalite 1pc mount. Magpul M93B stock. BUIS, VFG, etc. Again -- wow -- amazing what it adds up to.

So I've got essentially a Cavalry Arms "Trooper". 1:9" twist, 14.5" with the permanently attached flash-suppressor. I selected this in part because I COULDN'T screw with it.

I've managed to last 7 months.

Now I keep finding myself thinking about a fairly heavy 1:8" twist, stainless barrel. Probably 16", plus a flash-suppressor. As long a gas-system as I can get (never seen / heard of rifle-length on a 16"). Maybe a LaRue 13.2" handguard. Surefire.

Or maybe go SBR.

Mike

[7idl]

cool, now post some pics! :)

[XJ]

CMMG has nearly every combination of barrel profile, barrel length, and gas tube.


Here is your rifle-length gas on a 16"
http://cmmginc.secure-mall.com/shop/?shop=1&cart=313230&cat=1&
http://cmmginc.secure-mall.com/shop/images/568.JPG

[michael_aos]

Thanks for the tip.

Any general comments about CMMG?

I'm actually tempted to just order an upper.

CMMG 16" M10R Upper
Price: $525.95
Receiver: A3
Bolt and Carrier Group: Semi-Auto Carrier
Both and Carrier Group Upgrade: No bolt group upgrade
Charging Handle Upgrade: No charging handle upgrade
Feed Ramp Option: Anodized Ramps
Sight Post Option: A2 post
Front sight base / Gas Block Option: F Marked Front Sight Base
Forward Assist Option: Round forward Assist
Handguard Option: LaRue rifle length handguards (+$280)

Any upgrades or options suggestions? Different gas block? Extended / polished ramps?

Mike

[michael_aos]

I really like this "look".

http://cmmginc.secure-mall.com/shop/images/604.JPG
http://cmmginc.secure-mall.com/shop/images/665.jpg

[michael_aos]

I hope I'm not setting myself up to be one of those guys that puts a $2K stereo and $1K rims on a $500 car....

Mike

[XJ]

Only have one CMMG upper so far, but have no complaints at all. I keep forgetting to call during the day and see if they have midlengths in stock, that's my next buy.

[BadShot]

Not heard of that brand (then again there are soooo many out there right now) but have you priced out the DPMS or RRA versions of the same upper? Any reason you're not free floating this?

[michael_aos]

I've free-float it if I was going through all this trouble. Those were just meant to be generic examples of what I was talking about. Although frankly I prefer the "look" of those handguards -vs- a quad-rail. Rails are ugly.

Short-term, my new plan is to stick a Troy Industries modular rail forend on it and add a Surefire M600A.

Mike

[BadShot]

yeah I can see where you're going with the rail uglies... though not my preference, I personally believe the advent of the FF Rail systems made the AR/M series so much more flexible that it is now one of the most versital weapon systems around. Just the optics placement options are worth at least some of the little add on rails. But yeah, that full length hand guard on the 16" upper is a good look and I can see why you're liking it.

Let us know what you come up with on a upper!

[bluker1]

I bought an Armalite M15A4 specifically for 3-gun. Initially equipped with a Leupold 1.5-5x20mm.

I eventually had the factory barrel swapped for a JP, and got a smoking deal on a used JP free-float tube (thanks Zak). Dropped in a Chip McCormick single-stage trigger. Swapped out the pistol-grip. Eventually went to a TA11 ACOG & LaRue mount. There's a surprising amount of money tied up in that gun.

Bought an Olympic K9GL. Factory floated barrel and SIR quad-rails. Trijicon Accupoint in an Armalite 1pc mount. Magpul M93B stock. BUIS, VFG, etc. Again -- wow -- amazing what it adds up to.

So I've got essentially a Cavalry Arms "Trooper". 1:9" twist, 14.5" with the permanently attached flash-suppressor. I selected this in part because I COULDN'T screw with it.

I've managed to last 7 months.

Now I keep finding myself thinking about a fairly heavy 1:8" twist, stainless barrel. Probably 16", plus a flash-suppressor. As long a gas-system as I can get (never seen / heard of rifle-length on a 16"). Maybe a LaRue 13.2" handguard. Surefire.

Or maybe go SBR.

Mike

I've got 18inch 1x8 SS barrels (full length gas system) or 16inch Wilson 1x8 SS for you and a larue 13.2 in stock. Just tell me when you want me to start your build:)

alan

[michael_aos]

Just tell me when you want me to start your build:)

I ordered a Troy Modular Rail Forend.

Simple installation without removal of front sight or barrel.

And a Surefire M600A (Scout Light) from MSTN (http://www.mstn.biz/).

I'm after something primarily for inside (home, tent) use with a CQB sight and a weapon-mounted light that's accurate enough (~1-1.5MOA) to double as a target-rifle with a scope.

I'm still trying to decide myself how far I'm really willing to go with that idea. I may just have 2 different rifles for 2 different purposes.

Mike

[michael_aos]

I guess it's the Dissy look, with the Recce specs.

Mike

[michael_aos]

http://cmmginc.secure-mall.com/shop/images/665.jpg

CMMG M10R Full Length MedCon Rifle

New production CMMG M10 16" full length MedCon Rifle. Barrel is based on our M10 multi-role barrel and comes with rifle length gas system rifle length handguards and rifle length sight radius. Features include mil-spec fire control group and take-down pins, forged upper and lower receiver, 6 position ribbed reinforced stock, medium contour barrel, 11 degree recessed target crown, chrome-lined 5.56mm chamber and bore, 1/7 twist and parkerizing under “F” marked forged front sight base. Upper receivers are "T" marked and include extended feed ramp cuts. Barrel is marked CMMG MPC 5.56 NATO 1/7. All barrels are magnetic particle tested and all uppers have been factory head spaced and test fired. Included with weapon are detachable carry handle, hard case, cleaning kit, sling, 2-30rd mags, manual and lifetime warranty.
$1025.95

[Phillygunner]

I think many of the rail forearms are ugly. However, you can buy a standard looking front end that free floats. They designed them for match competition and they're pretty affordable compared to some of the rail systems.

Philly

[michael_aos]

I bought a Leupold 2.5-8x36mm scope for it.

If the factory barrel will shoot "good enough" then I'm just going to quit messing with it.

Otherwise I'm toying with the idea of a high-quality 16" barrel, rifle-length gas-system and probably a carbon-fibre free-float tube that will still allow me the option of mounting a light and / or bipod and / or maybe a VFG.

Ideally I think I'd like a "target" rifle for plinking that I can reconfigure for home / defense just by swapping stuff on / off.

Mike

[michael_aos]

I finally broke down and did it.

http://homepage.mac.com/michael_aos/.Pictures/Guns/SDI/IMG_5808.jpg

http://homepage.mac.com/michael_aos/.Pictures/Guns/SDI/IMG_5806.jpg

[7idl]

cool, now take 'er out and come back and post a range report. :)

[michael_aos]

Shot about 100rds today. It seemed to favor Winchester "white box" 55gr (the 40rd Value Pack version), 75gr TAP, and Black Hills "blue box" 69gr.

Didn't like XM193 or Black Hills 75gr.

Some velocities:

Black Hills "blue box" 69 - 2666fps
Winchester "white box" 55gr - 2927fps
Hornady 75gr .223 TAP - 2552fps
XM193 - 3086fps
Black Hills "blue box" 75gr - 2603fps

Mike

[Scott]

How did you calculate velocity?

[michael_aos]

How did you calculate velocity?

Oehler Model 35P (http://www.oehler-research.com/model35.html)

http://www.oehler-research.com/images/oehler2.jpg

[Scott]

Why do you say "Didn't like the XM193"? It had the highest velocity, or is that not the goal? Or is it just a personal preference/jamming issue?

[michael_aos]

Sorry, I meant "it" didn't like the XM193. The XM193 was not accurate in this rifle.

Mike

[Scott]

Gotcha. Just trying to learn me a thing or two.