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Old 07-12-2013, 18:19   #1
SF18C
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Homebrew AR15

I am thinking of "building" my next AR.

US-M4 Lower ($400)
http://usautoweapons.com/usm4/catalo...oduct_id=83025

Sine Pari Series M4 Upper Receiver Group 1 (URG1) 16" ($1700)
https://www.teludynetech.com/products/

EoTech HHII optics ($1000)
http://www.eotech-inc.com/products/sights/hhs2

Odds-n-Ends from Magpul ($500 ish)
http://store.magpul.com/
BUS, Sling attach point, mags, bipod, etc, etc.

Hmmm might cost more than my old truck! Might need to see if I can get an SF discount!


Any thoughts?
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Old 07-12-2013, 20:52   #2
The_Mentalist
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Everything looks great. Should be a fine rifle.

I run the XPS 2-2 on mine and it is a great sight. Just don't put too much reliance on the BDC dot. It is generalized and different rifles will have a different POI based on barrel length and ammo used. The 2-0 is actually a better reticle with the 65 MOA circle and the center 1 MOA dot. No BDC dot on it. Just IMHO. And, if you plan on using night vision, you have to go with a 3 series. They also have the zombie reticle, but it is too cluttered for real world use.
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Old 07-12-2013, 21:01   #3
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I like a good solid lower, like the LMT or BPM, and a Bravo Company or BPM upper.

Not very familiar with the makers you listed. I'd say the lower is overpriced by at least $100 and the upper smells like snake oil to me. A good upper from Bravo Company or Colt would run you less than half that price.

Agree with the optics and the MAGPUL accessories. If you want a bit more range, I like the ACOG TA31 or the Leupold 1.5-5x Tactical. Troy BUIS and Larue mounts.

Hey, that's why Baskin Robins has 31 flavors. Just my .02.

Enjoy your toy.

TR
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Old 07-12-2013, 21:24   #4
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Well the choices at this point were more dues to the "SF'y-ness" then price, capability, or common sense!

The guys that make the uppers are SF dudes (or so I hear) and the lowers (while cost more than most) are reported to give funds to SF charities.

I am still researching but I think I want to build a nice range gun for "amateur competition" shooting.

I have a Colt Sporter with an EOOTech, it is very durable and very accurate but that is my "go to war" gun. We also have a DPMS Lite which was/is the cheap entry level AR. Nothing bad to say about it but nothing sexy either.
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Old 07-12-2013, 21:51   #5
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Hmmmm. I'm with TR on this one. (No real surprise there! ) As he says - "that's why BR has 31 flavors". FWIW - We did look at the barrel you're considering at SHOT two years ago. The manufacturer made some interesting claims; most of which seemed to defy the laws of physics as I understand them (primarily heat transfer characteristics). He/they also made some very interesting claims WRT accuracy. MOO - Expensive and not discernibly better than any of the toys I've already got. I couldn't see the ROI. YMMV.
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Old 07-12-2013, 21:52   #6
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Not questioning the validity of your choice of optics, but could you explain it to me? I have an eotech 512 on my work rifle, and I understand TR's choice of the Trijicon, but the HHII seems like it's trying to do two things at once. That appears to be a compromise at a very high price point.
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Old 07-12-2013, 22:07   #7
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Optics on my next project will probably be something along the line of http://www.laruetactical.com/riflesc...-65x24mm-mount. This concept is available at every price point from Nikon M-223s through S&B SD. The guys I go to for the latest trends are all looking this way themselves - though the Army is footing the bill at the Leupold Mk 6/Mk 8 and S&B SD level. I've got Aimpoints, EoTechs, and ACOGs and they all have their issues.
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Old 07-12-2013, 22:09   #8
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Quote:
Originally Posted by TacOfficer View Post
Not questioning the validity of your choice of optics, but could you explain it to me? I have an eotech 512 on my work rifle, and I understand TR's choice of the Trijicon, but the HHII seems like it's trying to do two things at once. That appears to be a compromise at a very high price point.
I can't put my finger on it but when I see ARs with "full fledged" scope it just "looks" wrong to me. Stupid I know!


Rick Porter with a Teludyne Tech AR-15 Teludyne also builds rifles/barrels for US Olympic shooters. Anyone ever work with Alan Adolphsen?
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Old 07-15-2013, 15:53   #9
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Quote:
Originally Posted by SF18C View Post
Hmmm might cost more than my old truck!
SF18C, with that budget, might as well go for the MR556 upper I was talking with SOF exchange students from Germany, Singapore, and Estonia few days ago and they all love their 416. The manual even says not to clean it. Likewise, the ***/**** personnel I exchange thoughts with highly recommend the platform. If it ever breaks, good luck with the customer service though lol

or consider this
http://www.laruetactical.com/larue-t...r-system-lt011
air177 here has one and should be able to provide you range report
or you if you look hard enough, sometimes there are OBR 5.56 upper for sale on gunbroker

or this solid newcomer
http://www.usamade-ar15parts.com/category-s/34.htm
http://www.usamade-ar15parts.com/product-p/tmc.htm
I have personal experience with the ultralite platform and with the gas tuned, it's the softest, smoothest AR you'll ever shoot. 200m headshot with M855 all day long. If you google for groupings, it's legit. Mr Barnes is a solid guy who stands behind his product, employ SF vets, and he does offer mil/SOF discount.

Also, with choices for excellent upper, please don't skim with the lower. I believe in investing in good trigger to fully bring the full accuracy potential of the upper.

In my next build I'm focusing on barrel, free-float rail, gas-bufferspring or piston, action, solid fitting/staking, and trigger for overall reliability/accuracy package. Everything else is gravy.
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Last edited by frostfire; 07-16-2013 at 10:04.
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Old 07-18-2013, 09:27   #10
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BCM Used

Following the advice a writer put forth several years ago, I have built several M4 clones, so that my boys will have something available. You never know when Our Dear Leader will pull the rug our from under us.

I used Palmettos State Armory stripped lower receiver, with mostly Bravo Company URGs. One I built with Noveske components for a super barrel. The PSA lowers were manufactured by LW or FNH.

A friend worked at Picatinny Arsenal and shared some insight into some of the manufacturers. He told me that Colt is not what it used to be, and there were many no-go scenarios when they went up to do spot inspections on the manufacturing facilities.

The BCM components are outstanding and the important thing for me is they usually have their products in stock. Something I considered with BCM complete uppers is they are properly configured, with correct headspacing. No concerns something will fail... or blow up.

Though many companies have come forward and started producing AR parts and even complete rifles, there have been more than a few with parts not within the specifications of the data pack. I have stuck with traditional M4 parts, as going with a company manufacturing unique shapes and gizmos becomes a support/ supply problem when the next gun grab shows its face.

I will have to check out the Sine Pari Series M4 Upper Receiver Group, though I wonder about the muzzle device coming loose. I would like to support a Veteran that went into business, especially one making Freedom Tools!

Something to consider is order up one of the LaRue rifles, as the back log is pretty lengthy. You can always cancel it if you select another manufacturer.
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Old 07-18-2013, 16:25   #11
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So first off I will state that I currently work for SIG SAUER, so I will not put forward what I think you should get. I will say that the rifles that the others suggested are all good rifles from good companies.

That being said i will tell you that i did have a straight jacket job done to my AR back in 2011. First I did not have a reduction of weight on the gun. The gun was shooting 1 MOA to begin with, when I got it back it was still able to shoot 1 MOA, maybe better, I am not quite good enough to shoot better than 1 MOA. Now it did rapidly reduce the barrel tempature, however it made my barrel more sensative to heat as well.
I was shooitng 20 round shot groups and my shot groups open 2 to 3 times the size by the time i started the 3rd magazine, and started to have rounds impact outside the 6 inch target i was using. I step away from the gun for less than 5 minutes and fired the forth mag and the shot grops size reduced back to less than half of the previous shot group.

Now i dont know if he has improved the process or not since then, so I cannot speak to what is currently coming out of his shop, I will say the technology would improve the accuracy on a bolt gun but I am not sure on a gas gun. I did take a look at the outside lab report Telydyne has on their website and if you read it the data for it was collected on a remington 700 not an ar platform.

So that is my $0.2 base off my experience with the system about three years ago.
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Old 07-18-2013, 22:59   #12
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Quote:
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...I was shooitng 20 round shot groups and my shot groups open 2 to 3 times the size by the time i started the 3rd magazine, and started to have rounds impact outside the 6 inch target i was using. I step away from the gun for less than 5 minutes and fired the forth mag and the shot grops size reduced back to less than half of the previous shot group.

Now i dont know if he has improved the process or not since then, so I cannot speak to what is currently coming out of his shop, I will say the technology would improve the accuracy on a bolt gun but I am not sure on a gas gun. I did take a look at the outside lab report Telydyne has on their website and if you read it the data for it was collected on a remington 700 not an ar platform.

So that is my $0.2 base off my experience with the system about three years ago.
Did you call the shop or email Alan or Rob about the issues?

About a year ago the previous CEO was fired and the place is under new leadership. A few of the lingering issues with QC was taken care of in the change.

As a matter of fact, C/3/7 currently has a couple of the 12" Sine Pari URGs and the initial reports are that the SP's are blowing the Daniel Defense 10" URGs out of the water across the board. Rob is still waiting on the official report.

Chris Costa (for those who care what he has to say) has one of the 12" as well.
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Old 07-21-2013, 09:01   #13
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Originally Posted by SF18C View Post
I am thinking of "building" my next AR.

US-M4 Lower ($400)
http://usautoweapons.com/usm4/catalo...oduct_id=83025

Sine Pari Series M4 Upper Receiver Group 1 (URG1) 16" ($1700)
https://www.teludynetech.com/products/

EoTech HHII optics ($1000)
http://www.eotech-inc.com/products/sights/hhs2

Odds-n-Ends from Magpul ($500 ish)
http://store.magpul.com/
BUS, Sling attach point, mags, bipod, etc, etc.

Hmmm might cost more than my old truck! Might need to see if I can get an SF discount!


Any thoughts?

Very Nice............but, my arms room has 4 of the same weapon's system (.22 Pistols & Rifles, 9mm Pistols & Rifles, .45 Pistols & Rifles, 12 gauge Pump & Semi) I look for quantity verses quality wtshtf ..... (Think Repair parts & community)

Well, anyways, you planted that seed, time to go look at "Gun Porn".
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Old 07-21-2013, 12:16   #14
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For what you're spending on that Eotech combo, you could have yourself a variable power optic. Lighter weight, lower profile, less moving parts.
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Old 07-21-2013, 12:18   #15
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Thanks for all the feedback...lots of good info!


Quick update....I just bought a Jeep and not a cheap one either!

Still plan to build my AR, just going to do a little more research, I don't think my plan will change much (other than the optics). Still liking what I hear about that Straightjacket Upper and kinda just want the USM4 lower because of the SFA crest! probably look at swapping out the trigger guts.



FWIW...2013 Jeep Wrangler MOAB edition....note the cool ass SF crest on the hitch. I have had that thing for years and nothing to put it on!
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