AR-15 BS Thread

The 6.8 with the 140 Berger VLDs with .487 BC is still supersonic at 1K. Pretty much answering anything the Grendel has.

 

Check out Savvy Sniper...

- Mark

 

I read that the 6.5 does have better bc at longer ranges as well

 

I'm looking to move my scope forward a bit. I'm trying to decide which is the "best" scope mount to get. I've seen the Burris P.E.P.R. mounts, but I've also seen similar designs from Leupold and Nikon.

Burris:

$80 Burris Optics 410343 P.E.P.R. Riflescope Mount, Ideal Mounting Solution, Featuring Picatinny Ring Tops, Black , 1"

http://www.amazon.com/Burris-410343...e=UTF8&qid=1353172658&sr=1-2&keywords=p.e.p.r.
Leupold:

Leupold 110294 Mark 4 IMS 1"

http://www.amazon.com/LEUPOLD-MARK-IMS-INTEGRAL-RING/dp/B004UMAEXM/ref=pd_sbs_sg_5
Nikon: http://www.amazon.com/Nikon-827-M-223-Mount/dp/B007PXVQN0/ref=pd_sbs_sg_8

Any of these better than the others? Any others that you would suggest?

My current configuration is a PITA to pull the charging handle.

 

LaRue

 

yeah, but aren't those ridiculously expensive? I'd like to keep it under $100.

 

Buy a BCM charging handle. Instead of buy a $200 mount. And I got to kill a deer with the little 223

 

Oh, well yeah, if your on a budget then the Burris is my suggestion.

 

http://www.bravocompanyusa.com/BCM-GUNFIGHTER-Charging-Handle-GFH-Mod-4-p/bcm gfh mod 4 556.htm

 

over the Leupold? any particular reason why?

for what its worth, the score is a Redfield.

 

From what I've read on 6.5 vs 6.8 is that 6.8 was a better in a battle rifle while 6.5 had a flatter traj. and better for competition. But I honestly haven't researched too much, I'm in the "5.56 works just fine" camp.

 

No personal experience with the leupold so can't comment.

The 6.5 better trajectory was true until the recent introduction of the 140 Berger for the 6.8. However that's only one bullet where the 6.5 has several to choose from but does deal with over pressure issues where to hot can and do break bolts.

 

Just out of curosity, what is so great about a bcm charging handle?

 

If you click the link there's a lot of info on that page about the theory behind the design if you scroll down. I use the BCM because I like the larger latch design better than other enlarged latches (like the Badger latch, for instance) and the latch also has a "gas buster" effect because of the ridge at the back. Helps keep the blowback out of my face. A true Gas Buster vented latch is closer to $100 though.

I like the medium BCM Gunfighter. It comes in 3 latch lengths.

 

I finished building the lower to my AR-15 today. The notable parts are:

Lower:
Noveske Gen II Lower
Noveske H-buffer
Magpul Ambidextrous Sling Adaptor
Magpul STR Mil-Spec Carbine Stock
CMMG AR-15 Lower Parts Kit
Troy Industries Ambidextrous Safety
Geissele SSA-E Two Stage Trigger
Magpul MIAD Mission Adaptable Grip
Magpul B.A.D. Lever
Magpul 30 Round PMag with Ranger Plate

I also have a Vultor MUR-1 Upper and BCM Gunfighter Charging Handle shown in the pictures below




Now All I have left is to finish the upper and add-on's...

Upper:
Vultor MUR-1 Upper
BCM Gunfighter Charging Handle
Noveske N4 Light 5.56MM Barrel - 16"
SureFire SF3P-556-1/2-28 Flash Hider / Suppressor Adapter
Adams Arms Mid-Length Piston Conversion Kit
Samson 9 inch quad rail
FailZero 5.56MM Bolt

Add-on's:
Troy Folding Battle Sight Set
Magpul AFG2 - Angled Fore Grip
EOTech 553
SureFire X300 LED WeaponLight
SureFire XT07 Remote Dual Switch for WeaponLights
Cobra Adjustable One Point Sling
SureFire SOCOM556-SB Sound Suppressor (eventually)

 

Nice list. Spared no expense. I have 2 questions.
1st for the young bolt are you going phosphate or chrome, standard M16 or NM and I assume you meant BCG or if you only meant bolt whose carrier and internals are you going to use?

2nd: why the surefire flash hider over the break? This one is just a curiosity thing.

 

Like the vltor. Thanks for supporting a tucson company.

 

With a low mount optic it makes the charging handle usable in my case. This is the Large handle

 

Yea, this build is really expensive but I wanted to do if for myself (present to me!) I've wanted an AR-15 since I knew they existed. When I finally started getting serious about buying one, and I started doing research into what "built" rifle I wanted, I realized that I wanted so many different things I just figured it would be better [and cheaper] to build one from scratch. Needless to say, it will be an awesome rifle when I finish it.

Answer 1: I am going to try and get a chrome bolt. I've heard that they resist carbon build-up a lot better than standard bolts. As far as the phosphate coating, I don't have too much experience with them so I don't know how it would do with carbon and normal wear. I will be getting a standard M16 bolt, but I don't know what you mean by "NM". The Adams Arms piston conversion kit comes with a one piece bolt carrier group, so I only need to buy a bolt in addition. I'm not stuck on Young manufacturing, but I wanted a chrome bolt - even though I know it won't see much carbon with the piston system.

Answer 2: Thinking long term, I would like to eventually add a SureFire SOCOM556-SB Sound Suppressor, so getting a surefire flash hider / break will be the perfect interface to attach the suppressor. I chose the flash hider instead of the break because it will probably be a while before I could get the suppressor (conceals flash) and I wanted something to conceal flash (SHTF scenario). When I finally get a suppressor, I will probably move to the break because if I want flash suppression, I can put the suppressor on. If I get into 3 gun competitions like I want to, I will probably end up buying both to be honest.

 

You might consider a 16" barrel then. If you go 14.5", you have to pin & weld the flash hider on. Switching it out for a brake would mean grinding off the weld, getting the pin out, repinning and rewelding. You'd definitely have a messed up flash hider and would need to be careful not to damage the barrel.