I was in the market for AR-10, but with all this BULLS**T going on about weapons bans. I've kind of shifted towards the M14 with a match barrell. I have numerous LD bolt rifles so lets keep this to Semi-Auto only please. What are your thoughts and/or reccomendations. Please list reason why as well.
I own both. I have to say I prefer the M1A personally, but either one is a great battle rifle, in all honesty. Hard to beat .308 firepower in a semi-auto, too.
AR-10 pros: More accurate because of free floating barrel. Lighter in weight (but not lightweight). Can use LR-308 P-Mags, depending on manufacturer. So much easier to mount optics on. More modular, so you can set it up to your liking easier. Rails allow for attachments. Easy to find parts; not so easy if SHTF, though.
AR-10 cons: Pain in the a$$ to clean carbon out of chamber and off bolt - scraper needed and time consuming. Need to carry spare parts - bolt, firing pin, extractor, etc. because parts get baked and abused in chamber from hot gases and carbon buildup. Not easy to use in close quarters, vehicles, hallways, etc. Requires regular maintenance and must be kept wet to ensure reliability; dust, sand, mud & muck, ice, snow can create jamming and malfunction issues.
M1A pros: Very reliable operating system. Can get 25 round mags (Magpul is also coming out with 25 round mags this year, so a wash soon). Gun is very durable, and handles adverse conditions very well - mud, muck, snow, ice, dust, sand do not cause as many malfunctions. Operating system means gun runs clean and cool. Probably the best factory iron sights available, especially with the tritium front sight. Not as accurate as an AR-10, but even standard model is combat accurate. Excellent reputation for reliability and durability.
M1A cons: Heavy compared to AR-10, depending on model chosen. Some cast factory parts can be prone to breakage (but customer service is great and lifetime warranty). Combat accurate; match accuracy requires careful bedding, lugged receivers, upgraded barrels, and can be costly to obtain. Cleaning is made difficult by receiver design - need articulating or ratcheting chamber brush. Mounting optics is a real PITA - scope mounts are pricey - TROY Battlerail is a good way around this problems, but costs $250ish - but it is worth it.
You can get .308 AR-10 rifles (and I do not get all hung up on "only ArmaLite makes an AR-10" BS the fanboys scream about) that are great rifles. LaRue Tactical 7.62 OBR is an incredible rifle - 0.33" MOA gun out of the box, but $3400ish. Les Baer SWAT model is amazing, 0.5" MOA guaranteed, but $3800ish. LMT MWS, KAC SR-25, ArmaLite all make great rifles.
But for under $1500, I would get a standard M1A in black fiberglass with 22" barrel, or DPMS LR-308, or even better, the Remington R-25 with the 20" barrel - that R-25 is a sub-MOA rifle out of the box with factory ammo (but you will need optics or iron sights).
In the final analysis, if I had to choose only one, I would buy the 22" Standard M1A, and some 25 round CMI (CheckMate Industries = OEM) mags, and extra ammo.