^^^^ 3%er ^^^^
Joined: Aug 2008, #8741
Location: The free state of Arizona
2007 TRD Off Road
2007 Double Cab Automatic 4.0 V6
Bilstein 5100's (front set @ .85"), OME 885's, chris4x4 anti-Taco-lean spacer on driver's side, Total Chaos UCAs, Rear Leaf Spring TSB, Toytec AALs, Black FJ TT Wheels, BFG 285/75R 16 AT Tires, TRD Exhaust, Viper Alarm, Fog Light Mod, De-badged, Blue LED Dome Light, EZ Clamped Tailgate, Wet Okoles, Satoshi Grill, 5% Tint, Engine Tick Fix, Black Rear Bumper, Black Center Valence, Exhaust Cut At Axle,
Thanks for all the help chris4x4!
Originally Posted by stenyeart
These threads crack me up. There is nothing wrong with a DPMS, Bushmaster or any other make for that matter. I have a colt, DPMS and an olympic arms. I have also owned a bushmaster (I get them at 50% off msrp). They are all made to mil-spec. I would not recommend the olympic arms, but I have not had any problems with my DPMS or bushmaster.
Are you trying to tell me that your DPMS or BM is of equal quality as your Colt?
No commercially produced AR15 type rifle is "mil spec."
Configuration is a part of the military specification, but since many of us don't want/can't have an M16 coming off the assembly line, this is of little interest to most. (Collectors & machine gunners, forgive me!)
More importantly, none have gone through the government mandated test and inspection, let alone compliance and certifications. These procedures & requirements, hated by all manufacturers, are the best cost effective attempt at ensuring a reasonable level of quality in parts and finish, as well as assembly, from rifle to rifle. Remember, the lowest bidder gets the contact, normally. Rest assured, NONE of the commercial guns meet these kinds of requirements.
Many parts in AR15 type rifles simply could not be mil spec, since they are different parts, and not even used by the military. And not inconsequencial parts either: bolt carrier, hammer, trigger, disconnector, safety selector, etc. In fact, these are some of the most critical parts in the rifle. Even the steel called for in the bolt mil drawings (Carpenter 151, I think?) is virtually never used in commercial bolts.
And then there's Colt, who uses, from time to time, non standard hammer/trigger pin holes and take down pin holes, as well as includes a "block" in the lower for reasons bizzarre.
Manufacturers/dealers/etc. insist that their rifles/parts are "mil spec". What does this mean?
In the best case, it means that all the parts in the rifle's assembly are either actual G.I. parts (modified as required by BATF for semi-auto where necessary), or "virtually" the same, and, that they were assembled in a manner consistant with those levels of quality equal to, or better, than that found in "contract" rifles. By parts that are "virtually" the same, I mean made by the same contractor, the same way, as the mil part.
In the worst case, it's pure hype.
Normally, it's in between these two.
In virtually every case, a part made by a G.I. contractor is vastly superior to a part made by a non-contractor. Many part suppliers/rifle builders/manufacturers actively seek out "cheaper" parts supliers in lieu of the current, higher priced contractors.
We see lots of crapola parts in rifles sent to the shop for repair. Lots. However, current Armalite and Bushmaster rifles are typically just fine, though in serious need of lubrication--but that's another story!
Hope this helps!
It's not that old but I'll try and find an updated chart.
Originally Posted by kinetik873
As far as barrel twist, the 1/9 is for longer range, heavier loads. 1/7 will work great for 55gr-68gr rounds. Ive got a Mk12 copy (recce M-4) that I shoot 77gr & 87 gr out to about 600 meters with. No issues at all. For teh AK/AR argument, Im with Packerfan, they both have great advantages adn disadvantages in both performance, cost, and adaptability. At the end of the day, its not how badass your gun looks, its whether you can drive your gun, get your rounds on target and stop the threat. If you like to plink, look at an AR in .22-cheap ammo, decent range and you can practice on the same setup.
1/9 is more for 55gr and smaller.
1/7 is for heavier gr bullets.