When the CMP had M1 carbines for sale, I immediately started deciding what to sell so I could buy one. One semi-auto UZI sale later, I drove the 45 minutes from my house to the CMP store, where I picked out this Inland. Service grade, what made me choose it was it's overall condition, including an excellent bore and muzzle, it's six digit serial number, and it's I-cut oiler slot stock.
It has been 100% reliable with good ammo. With MagTech, it experiance primers falling out, one of which fell in the op slide cam and jammed it. No problems with any other ammo.
As far as ammo being expensive, I don't mind paying $20 for 50 rounds.
I prefer the 15rd mags. CMP had USGI 15rd mags cheap, and I bought a box full. I have also used the Korean mags, both 15 and 30 round. I find them to work perfectly, including the 30's. I installed an M2 mag catch for the 30's.
a couple months ago, CMP came up with Norwegian made carbine bayonets cheap. I got my order processed just before they sold out.
Here is a pic of my Inland with bayonet. The sheath was my fathers in WWII.