JD's "Personalized Advice on My AR" Thread

Discussion in 'AR-15 Discussion' started by Dillinger, Sep 29, 2009.

  1. Dillinger

    Dillinger New Member

    23,972
    1
    0
    Okay, so what qualifies me to help spend your money??

    Not a damn thing really. I have no Colt Armorer's certificate. I don't work at DPMS or Bushmaster. I only have three of my own.

    But, I have worked part time in a gun shop for about 5 years now and I have done a lot of AR assembly. I have worked on about 90 or 100 AR's in that time. Everything from ground up builds to parts mods, and even a couple of post shooting inspections.

    I AM NO EXPERT. I don't claim to be, and I never have. Nothing I say can make you win competition and nothing gleaned here is going to get you past the Space Zombies without a lot of practice, trial and error.

    I have posted a lot of information in these AR threads, but the one thing that keeps coming up, is that people want a personalized answer about THEIR SPECIFIC AR.

    Okay.

    Here's the thread: :)

    You ask the questions, and I, with the help of my Master 'Smith, Slowrdy45 and a handle of great guys, will try to help give you personalized answers that you can do more research on, or purchase outright to get your weapon platform up to your needs.

    Welcome to the Wonderful World of the AR Platform and all it's little secrets.

    JD
     
  2. NGIB

    NGIB New Member

    7,143
    1
    0
    Ok JD. I have a Rock River flat top carbine upper (chrome lined, 1/9 twist, 5.56 chamber) mounted on a C3 Defense billet lower fitted with a Rock River parts kit. For optics, it has a Trijicon ACOG and I also have a detachable carry handle with iron sights. For mags, I have Magpul Pmags. Just bought a case of 62 gr brass cased FMJ.

    The question for you is - will this be an effective weapon when the zombies (or liberals) attack? We all know it's coming and I want to be prepared.

    Seriously, i've heard that 62 gr is about as heavy a bullet that will stabilize from a 1/9 twist barrel - true?
     
    Last edited: Sep 30, 2009

  3. Dillinger

    Dillinger New Member

    23,972
    1
    0
    Yeah, that 62 grain will stabilize pretty good, it's not ideal, but it should be fine. I have heard of people shooting the 75 grain in the 1:9 twist effectively, but I highly doubt they are shooting it for dime sized groups.

    I prefer the 1:8 because it gives a much wider range of ammo you can shoot through it.

    I think the AR platform is the right choice for urban type zombie fighting and will treat you right. Ammo everywhere and the weapon is easy to maintain and keep clean yourself.

    Pick up a .22lr conversion and you have a nice little small game killer without all the noise - because as we have seen the Zombies like the noise....
     
  4. 2hot2handle

    2hot2handle New Member

    803
    0
    0
    Alright JD, I just built lower half (stag) for my AR and I have a complete del-ton A3 upper, chromelined and chambered in 5.56 coming. I want to be able to shoot this build as much as I can, as 5.56/.223 is too expensive to just go out and have fun plinking rounds with my buds (budjet). What do you think about a CMMG .22 lr conversion kit? Is this a good kit? Are their better ones? Should I just save up and get a dedicated upper? And another question, it may seem rather trivial but what kind of sling should I get? Single point? I am brand new so I have no idea really what I should be looking for or what each type of sling will do for me. Let me know. Thanks JD really appriciate it.
     
  5. junho806

    junho806 New Member

    909
    0
    0
    good thread JD
    i'll be peaking in here every once in a while as well
    :D
     
  6. Dillinger

    Dillinger New Member

    23,972
    1
    0
    2hot - Glad to be of help here.

    The CMMG .22lr conversion is a very good kit. I don't know of anyone that has had anything bad to say about it.

    I recently ordered a kit from one of our supporters here, Michigana, and will be posting a review when it gets here.

    Shooting a .22 out of the 5.56 is fine, you won't harm the barrel, especially since you have the chrome lined one.

    It won't lead to the best of accuracy, as attested to by my good friend stalkingbear here on the forum.

    I believe the difference in the diameter of the bullet is only .001" but you will see a difference in accuracy.

    Should be fine as long as you are not trying to compete with it.

    Keep us up to date on your progress and post some pictures as you go if you can.

    JD
     
  7. Yogibear

    Yogibear New Member

    5
    0
    0
    Because you are smarter than me on this subject lol. Today I started my AR build by buying a Charles Daly lower receiver. I am wondering who, in your opinion makes the best/ highest quality lower receiver parts. I am a huge newb right now, but I have no problem with spending money and taking my time.
     
  8. hydrashok

    hydrashok New Member

    692
    0
    0
    JD,

    I built an AR15 that is almost identical to the one I carried in Iraq. It has the flat top upper and a knock-off Aimpoint copy.

    The problem is the Knights Armament Rails we used cost $350 plus in the civilian market.

    I found one that was made for airsoft at KAC Knights Armament Style RIS Rail Handguard

    I was wondering if that would still be sexy, or if I would get laughed at?
     
  9. Dillinger

    Dillinger New Member

    23,972
    1
    0
    Welcome yogibear. Did you sell all your stolen picnic baskets to fund this build? :D

    For the most part, any complete lower parts kit you get, is going to treat you right. The best kit, in my opinion is the Rock River Arms, because they really good stuff, they stand behind it and I have installed, probably, 2 or 3 dozen of them without issues.

    The market has gotten a lot better, and companies have caught up with production, so odds are good that if you find a lower parts kit in stock, it's a good one.

    You can personalize the pistol grips, so don't get hung up on that. That is one screw to change out and you don't have to take anything else apart.

    I am pretty sure the Charles Daly lowers take the small parts kits ( the large parts kits are labeled Colt Pin set and measure .173 ) so don't buy one that is labeled for large pin AR's.

    Really easy to assemble. After you do your first one, you should have a great understanding of how the weapon functions.

    PM if you run into trouble. Otherwise, take some pictures and post up your progress. :D

    JD
     
  10. Dillinger

    Dillinger New Member

    23,972
    1
    0
    I don't think it will mate up to be honest to you. And yes, I would definitely laugh at you... :D

    Try These and see what you think. Great company. Great product. Great price with a sale on now. :D
     
  11. russ

    russ New Member

    1,011
    0
    0
    Trigger job. JD, I've seen you mention the DIY trigger job in several other threads, and I am interested in what it entails. I have a CMMG lower with a Model 1 parts kit in it, and a Bushy 20" Predator upper with a 6.5-20X Simmons scope on it (not that any of that makes a hoot for the trigger).

    [​IMG]
     
  12. Yogibear

    Yogibear New Member

    5
    0
    0
    How do you like model 1 parts stuff? I am looking at ordering their full varmint kit to mate with my lower
     
  13. russ

    russ New Member

    1,011
    0
    0
    I have no gripe with the Model 1 parts, the scope mount is also Model 1. It cost half what the next best option cost. Nobody is going to mistake it for a LaRue Tactical mount, but that's OK by me.
     
  14. Dillinger

    Dillinger New Member

    23,972
    1
    0
    Russ - Good looking stick you have there. Very nice.

    Do a google search on "15 minute AR trigger job".

    It's quite easy and close to what we do in the shop. It is possible to do it wrong and get the weapon to double fire, which is illegal.

    Because of that, I don't post this particular modification on this website out of protection for the site. I am sure you understand....

    JD
     
  15. russ

    russ New Member

    1,011
    0
    0
    Thanks JD and I totally understand. In today's world where nobody is responsible for their own actions, you have to CYA. [​IMG]
     
  16. Dillinger

    Dillinger New Member

    23,972
    1
    0
    Thanks for understanding, it's just a personal CYA deal because it can be done wrong and it can lead to legal problems, especially if you are unlucky enough to test fire it at a local club with a police officer as a shooter or range officer. :eek:

    It's pretty easy to do though, just follow the directions and start small with the modifications. If two passes does it, three doesn't make it better. :D

    JD
     
  17. matt g

    matt g New Member Supporter

    3,865
    0
    0
    What height rings should I use on a flat top for a more 'heads up' shooting style with a 1x optic. Can this be done with rings, or is it best accomplished through the use of a traditional 'carry handle' mount.
     
  18. FCross7

    FCross7 New Member

    1,015
    0
    0
    I'm trying to squeeze some more accuracy out of my AR-10 without spending too much money. It's already got a free floated hand guard and I just ordered a new trigger from Timney. Would I benefit from lapping the lugs, and if so, do you start with 400 then move up to 600, or would either one work? Does smoking the lugs like Tango did work as well as the dye for checking contact points? And where can I get said lapping compound? Also, is there anything else that can be done to squeeze any more accuracy without spending a ton of money? Thanks for any and all info.

    -Fred
     
  19. cpttango30

    cpttango30 New Member

    13,934
    4
    0
    the smoking works but no where near as good as dykem. I am not an ar expert but I don't think lapping the lugs on ar will really do much as there is something like 8 or 10 of them.

    JD Your up dude.
     
  20. Dillinger

    Dillinger New Member

    23,972
    1
    0
    Thanks Brother!

    Fred - Lapping the lugs on an AR is probably going to be an exercise that won't yield too much in the way of accuracy versus effort expended. The AR platform is quite different from a traditional boltgun, so the same things aren't as effective.

    If you have an AR-10, I am going to assume that you have an upper and a lower from the same manufacturer and that the mate between them is very good.

    A new trigger will definitely make a big difference. As will match grade ammo. I presume you probably have a 20" heavy barrel, possibly a little longer. If that is the case, you are already well equipped in that regard.

    The AR platform is pretty simple. And it's pretty accurate, but it will never shoot with a good boltgun. The inner workings and the dynamics around the platform just don't match what a good bolt gun can do, and vice versa.