by UnaStamus on Sun Jan 30, 2011 12:58 am
It all depends on what you want it for. The M1A and AR-10/LR308/SR25 are both in the Battle Rifle category, whereas the AR15 is in the "assault rifle" category. Different uses for different weapons.
If you want a down and dirty battle rifle, the M1A is a reliable and durable weapon that can take a pounding and keep going. The down side is that M1As are heavy and sometimes awkward. If you want an M1A for precision rifle use know this: the M1A is a money pit. You will spend loads of money for incremental gains in accuracy. The best M1As that Springfield Armory puts out can reliably hold around 1MOA, but not much better than that (at least not consistently). In order to get better accuracy, and to do so consistently, you will have to spend lots of money on gas system modification and tuning and various tweaks to the rifle. Smith Enterprises (SEI) puts out their M14SE Crazy Horse rifle, which has been able to get sub-MOA accuracy. If you want your rifle built to that specification, expect to pay a premium of several thousand dollars just for the upgrades and work. How much depends on what you have done.
In contrast, you can buy an AR-10/LR/SR platform completely built for $2k-$3k, and it will pull 0.5-0.75 MOA right out of the box. You can build an AR-10/LR/SR for less than that, and still get consistent 0.5 MOA accuracy. Where the issue comes in is for reliability. Many are reliable, but only to a certain extent. They must be kept cleaner than the M1As and during shooting, must be better lubricated and watched after. There are many reports from frontline soldiers shooting the M110s and having significant malfunction issues with them. In contrast, the LMT LM308MWS and POF-USA P308 platforms have been shown to be very reliable and durable, while still maintaining exceptional accuracy.
For a battle rifle platform, the AR-10/LR/SR can be much easier to control, manipulate and reload. The weapon will feel better in the hand, and it will work better in CQB and short range engagements due to more modularity and compact abilities.
Additionally, AR/LR/SR rifles are much easier to service when it's time for routine maintenance or replacement of damaged or worn out parts.
The AR15 platform is an entirely different ball of wax. It has different capabilities. In terms of tactical/combat/CQB use, it is much more capable due to lower recoil, easier manipulation and less weight. The round is also much cheaper to buy. For precision shooting, using a Mk262 type load with 77gr SMKs in a capable platform can yield 0.5 MOA accuracy out to ranges of 900yds. The 5.56 round is very capable for accuracy, but it gets batted around like a kite in wind, so there's a trade-off.
Essentially, you will have to decide what use you want the weapon for and tailor it to your needs.