The magazine body is a component, and is one piece. The components of the complete magazine would be the magazine body, the floor plate, the spring, and the follower.
US Navy Answer:
Locking block plunger, Magazine spring, magazine tube, follower, floor plate.
body, spring, follower
Follower, Floor Plate, Magazine Tube, Magazine Spring, Retaining plate, Locking Block Plunger.
Nagazine tube (body) spring, follower, base plate, lock plate.
1.16kg
15
The M9 magazine holds 15 rounds. Any magazine designed to be compatible with the Beretta 92 is capable of being used in an M9 pistol, but the only issue magazines are 15 round non-OEM magazines.
A short recoil, semi-automatic, single-action / double-action pistol, the M9 uses a 15-round staggered magazine with a reversible magazine release button that can be positioned for either right or left-handed shooters.
At a minimum, magazine body, spring, and follower. Some magazines may have separate floorplates, floorplate retainers or multi-piece followers.
It should have only been disassembled at operator level. You place the barrel into the slide, place the return spring into the slide, mount the slide onto the frame (pulling back the slide into place), flip the slide release up, then perform your functions check.
The M9 is a SHORT RECOIL, SEMIAUTOMATIC & MAGAZINE fed. MAJOR COMPONENTS: Slide Assembly, Barrel & Locking Block Assembly, Recoil Spring & Recoil Spring Guide, Receiver, & Magazine. CALIBER: 9x19mm (9mm NATO) LENGTH:8.54" WIDTH: 1.5" WEIGHT: 33.86 oz w/out mag, 40.89 oz w/15 round magazine. BARREL LENGTH: 4.92" RIFILING: Right Hand 6 Groove. MUZZLE VELOCITY: 1230.30 feet per second MUZZLE ENERGY: 420ft lbs MAX. RANGE: 1800 Meters.
No. The frame does.
Air cooled, magazine fed, recoil operated, double action, semi automatic pistol.