USDA indicates the beef was rated by the U. S. Department of Agriculture. USGI stands for U.S. Government Issue, and usually means the meat was originally sources for the US Armed Forces and is now being sold as surplus. Note: It is NOT necessarily the case that USGI beef has been inspected by the USDA.
It stands for US Government Issue beef, ie meat from the armed forces supply chains. That's silly. It means US Government Inspected. It means the meat passes USDA inspection without being given a specific grade such as "Select", "Choice" or "Prime". It's a store's way of selling you the cheapest grade of meat without telling you how tough it could be.
They have a specific floor plate for the P-Mag - the USGI floorplate does not fit on P-Mags.
Hands-on evaluation by a collector knowledgable in military pistols. Originality and condition are key factors. sales@countrygunsmith.net
The cast of 4-Sighted - 2006 includes: Andrew Pinon as Thomas Kelli Tager as Jennifer Michael Tolfo as USGI Agent Michael Triglia as White Mask
What you are asking takes up dozens of pages in books. It is not only the markings, but, the parts themselves and their markings, finish, etc. You need to find the books done by Clawson on the 1911.
Both are good and viable options. Before you buy the PMags, however, be certain they'll fit into the magazine well... some lowers have problems with this. With the USGI mags, on top of the Magpul follower, I also recommend replacing the magazine spring with a sturdier, braided spring.
Ammunition - USGI, Chinese and Taiwanese M14 type rifles are chambered for the 7.62x51 mm NATO cartridge (1.6350" GO, 1.6405" NO GO, 1.6455" FIELD REJECT). U. S. commercial M14 type rifles are chambered for .308 Winchester for the most part. However, many U. S. commercial M14 type rifles have USGI or Chinese M14 barrels threaded on their receivers. The commercial manufacturers head space their rifles to SAAMI specifications (1.630" GO, 1.634" NO GO, 1.638" FIELD REJECT). A U. S. commercial made M14 type rifle can use either .308 Winchester or 7.62x51mm NATO ammunition. This is because the headspace limits for .308 Winchester are smaller than for the 7.62x51mm cartridge as noted above. http://www.alpharubicon.com/leo/m14typeriflesd.htm
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -USGI--. That is, seven letter words with 2nd letter U and 3rd letter S and 4th letter G and 5th letter I. In alphabetical order, they are: busgirl
Depending on the make of your receiver, good scope mounts include Sadlak, Smith, Brookfield and A.R.M.S. #18. USGI spec receivers will accept any of the above mounts. The Sadlak and Smith mounts have the greatest adjustment for out of spec receivers. One of the advantages of the Sadlak Scope Mount is their custom fitting service which will guaranteed a solid three point contact mount on a receiver with an out of spec groove.
The receivers for the new Springfield Armory M1 rifles are engraved, Made in Austrialia. I believe they are investment castings. The barrels are SA barrels made by Springfield Armory,Genesco,IL. The rest of the metal is WW2 and post WW2 from original production runs by SA,Springfield Ma, Winchester, H&R, and other USGI manufacturers. I dont know where the M1A receivers are made.
You mean "Vietnam". There were many firearms used in Vietnam by the U.S. The USGI started the war using M14 but switched shortly in the war to the M16 as the primary rifle. As for machine guns, they used the M-60. Pistols were Beretta 9mm and a few 1911 .45 because some people were smart and keep their 1911 from before the switch to 9mm. There are many more firearms used in Vietnam by the US, but those were the main players.
I don't see why not. The problem is this: Is the carbine USGI or aftermarket. Generally under the rear sight there will be the maunfacturers name stamped. GM inland division, Singer sewing machine, rock-ola, and other companies made them. Most of them were made by civilian companies under government contract. They made several MILLION of them and if your is a 6 digit serial number, it ought to be worth a little more than, say one with a 7 digit serial number.