The bolt of my ArmaLite AR-7 rifle has a full length slot for the extractor that allows the bolt and recoil springs to be removed for cleaning. The recoil spring guide stays in the receiver and aligning the recoil springs with the guide rods is not fun on reassembly.
The bolt of my Charter Arms AR-7 pistol does not have an extractor slot. To remove the bolt, you have to remove the receiver side plate and the magazine spring & catch, to remove the extractor to allow the bolt to come out of the receiver.
The Henry US Survival Rifle bolt has a slot for the extractor in the bolt and a cut in the recoil spring guide for the hammer in cocked position. You can remove the bolt and recoil springs & their guide without removing the receiver sideplate. Do have the hammer cocked safety "on" to remove the bolt.
Of AR-7 versions, the Henry is easier to clean, the Charter Arms is the worst. I cut my Armalite recoil spring guide to match my son's Henry's.
Removing the AR-7 receiver side plate is not fun. The magazine catch spring and two tiny pivot pins are easily lost. I seldom see much powder residue in the lower receiver. The very clever SA firing mechanism is hammer, trigger, one wire spring to power them both. Getting the parts realigned and the side plate back on inspires language to rival this weekend's Svengoolie movie CURSE OF THE DEMON.
I believe that future explorers of the farside of the moon will discover a huge pile of missing socks and a small pile of AR-7 magazine catch springs. One of the springs is mine.