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Posted: 11/16/2008 6:58:54 PM EDT
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I posted this in the general are by mistake.
Hello, I am new to this forum, and looking at buying my first AR. I currently own a AK and a SL8/G36 conversion. A local Class III dealer is selling his personal 7.5 AR. And I think I want it. Here is what I know. Bushmaster/Kitty Kat, Double spring tube, Knights Quad rail, Vertical grip, Magpul stock. it has about 100 rounds fired $900 + $200 Federal Stamp. Seems like a good deal. I have been doing a lot of searching, and I have some questions. Oh, this would be a range/outdoor/toy not a home defense weapon. How loud it this thing? Louder than my ported .44 Mag? How much louder than a 10.5 version? Anything I can do to quiet it down? (can not own a suppressor in my State). Will a muzzle brake send the sound/shock wave down range? What is the best brake? Could I buy the 7.5 and switch barrels easily? Can I do so and not run into trouble with the BATF? Are there issues about where I can mount stuff? I have read a lot of posts about making adjustment, drilling out ports, switching buffer tubes Etc. If it fires now, will I still likely have to futz with it to keep it firing? I have read posts that indicate that it will wear out parts faster than it's long barreled brother. How many rounds can I hope to put down range before I have to think about replacing parts? Does it like .223 or 5.56 ammo? Any reload suggestions. I know this is a lot of questions, but I really am new to the AR world Thanks |
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Quoted:
I posted this in the general are by mistake. Hello, I am new to this forum, and looking at buying my first AR. I currently own a AK and a SL8/G36 conversion. A local Class III dealer is selling his personal 7.5 AR. And I think I want it. Here is what I know. Bushmaster/Kitty Kat, Double spring tube, Knights Quad rail, Vertical grip, Magpul stock. it has about 100 rounds fired $900 + $200 Federal Stamp. Seems like a good deal. I have been doing a lot of searching, and I have some questions. Oh, this would be a range/outdoor/toy not a home defense weapon. How loud it this thing? Louder than my ported .44 Mag? How much louder than a 10.5 version? Anything I can do to quiet it down? (can not own a suppressor in my State). Will a muzzle brake send the sound/shock wave down range? What is the best brake? Could I buy the 7.5 and switch barrels easily? Can I do so and not run into trouble with the BATF? Are there issues about where I can mount stuff? I have read a lot of posts about making adjustment, drilling out ports, switching buffer tubes Etc. If it fires now, will I still likely have to futz with it to keep it firing? I have read posts that indicate that it will wear out parts faster than it's long barreled brother. How many rounds can I hope to put down range before I have to think about replacing parts? Does it like .223 or 5.56 ammo? Any reload suggestions. I know this is a lot of questions, but I really am new to the AR world Thanks -$900 for a used 7.5" isn't bad. -yes, loud, VERY LOUD! It will be the loudest thing you've ever shot! I really can't give you a comparision to a 10.5" since I' not done buiding mine yet. You definintely DON'T want a muzzle brake if noise is a concern since brakes tend to actually make the bang louder. You'll wan't some type of flash hider. Unless he modified the gun most come with an A2 bird cage suppressor. The best that most people will recommend is the KX3 by Noveske but they are hard to find and a little pricey when you do. Try my trick, wear earplugs inside your muffs. -if by switching barrels, you mean switching uppers...no problems legal or other wise. If you actually mean switching out barrels on that upper your gearing your self up for a world of headache in your shop but still no porblems legally. A good general rule of thumb is the actual gun is the lower receiver, so as long as you don't modify that (other than grips or stock bodies) your good. Everything else is your play ground. -mounting stuff. Legally, you cannot put a VFG on a pistol. However you CAN on an SBR. As long as you have the stamp, your GTG. -Only the truely brave drill out gas ports. Don't worry about that stuff. I figure it came from the factory the way it was supposed to be. -7.5" barrels use a shorter than cabine length gas system. This will operate at higher pressures than the CAR system. This does mean that the gun will be a little rougher on itself. However I don't think it's going to be a case where every 2000 rds or so it'll be time for an overhaul. You should still be well into 5 digit round counts before you need worry about bolts and springs. -I can't say for sure about the .223 or 5.56. Get the model number from your seller and call Bushmaster sales (1-800-998-7928) -I haven't started reloading .223 yet but I would advise to reload everything as .223 so as not to overload a .223 case. -Hope all this helps. |
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I would have the dealer switch the barrel out before you pick it up... I realize the chances of someone running into you while it's in your possession is slim but the moment you leave his shop with it in your possession, your in violation with the BATF. Also, someone correct me if I'm wrong but I believe you're also in violation if you own an SBR length barrel w/o either 1) a pistol dedicated receiver or 2) an SBR dedicated reciever with the appropriate stamp.
For instance, you bring it home with a 16" barrel and leave the 7.5" barrel in the cabinet with no corresponding receiver, you technically have the parts and ability to build an SBR for which you have no stamp, this is a violation. Now, will people know it's there, probably not and is it my place to tell you how to go about it, definitely not, so I'll just give the info and you do with it what you need. That would be a fun gun and IMO, is suited great for some .223 TAP to use in a home defense / medium distance range shooter. 5.56 is unnecessary but sometimes you can find good deals on surplus 5.56 ammo. I just built a 10.5" pistol and will SBR it once my stamp comes back and it's purpose is the same as yours, home defense, 'yote plinking and range shooting. Don't go drilling holes or anything in it and it will last plenty long, the parts will work fine, main thing is to keep it clean. Yes, it will be loud and a muzzle brake will make it louder for you (direct the sound back at you). Find a Noveske KX3 flash hider in the Equipment Exchange or somewhere and that'll help send the sound down range away from you and make it a little more enjoyable, but you'll definitely want ear muffs. |
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