Yes, it will loosen over time. It's just the differences in tolerances.
Printable View
Hmmm....that does sound tight. My biggest problem, besides the tight fit, was I didn't have a good leavage point to take them apart. Thats why putting on the barrel helped for me.
Try placing the rifle across your lap, hold down the stock down with your right leg and rest the mag well over your left leg. The barrel should be facing left, unsupported. Take a rubber mallet and tap the top, front part of your handguard. Keep hitting it a little harder and harder if no movement but it shouldn't take much since you have gravity on your side. If necessary, hit it harder, it can take it unless you're the Hulk