22. Remove the sear and its spring downward.
23. Drifting out this cross pin toward the right will release the magazine catch and its spring for removal downward.
24. Drift out the barrel band cross pin toward the right.
25. Remove the barrel band toward the front.
26. Remove the large screw at the front of the forend.
27. Remove the forend toward the front.
28. The outer spacer ring will usually stay on the forend mounting bolt. If the inner spacer ring needs to be removed, it is easily lifted out of its recess in the forend.
29. The forend mounting rod is retained on a post at the front of the receiver by a roll cross pin.
30. The rear sight is retained on top of the barrel by a vertical screw. The front sight may be drifted out of its dovetail toward the right. The front sight ramp is not routinely removable.
Reassembly Tips:
1. When replacing the barrel band, be sure the hole with spline marks is on the right side, and replace the pin accordingly. Be sure all of the cross pins are driven in from right to left, with the splined head on the right side.
2. When reinstalling the bolt head, be sure the extractor is oriented toward the right side, as shown.
3. Insert the lever assembly with the bolt in fully closed position, and with the bolt gear at the rearmost location in its track, as shown.
4. Insert the gear and lever cross pins, but do not drive them into place until the gear and bolt engagement is correct. There should be a very small space visible at the point indicated with the lever closed. If the space is measurable, as it is here, then the engagement must be readjusted. To do this, pull the lever pin only, and reposition the lever track on the gear until the bolt closure is correct. If it is too tight for full lever travel, back it off by one gear tooth.
5. As the hammer is reinstalled, the trigger must be pulled fully to the rear for sear clearance, and the strut must be manipulated into proper contact with the hammer and the hammer spring follower. Important:As the hammer pivot pin is reinserted, a tool must be used from the opposite side to depress the lever lock, which uses the hammer pin as a locking surface.
Calico Model M-900
Similar/Identical Pattern Guns
The same basic assembly/disassembly steps for the Calico Model M-900 also apply to the following guns:
Calico Model M-951-S
Calico Model M-951 Tactical Carbine
| Data: | Calico Model M-900 |
| Origin: | United States |
| Manufacturer: | Calico, Inc.Bakersfield, CA |
| Cartridge: | 9mm Parabellum |
| Magazine capacity: | 50 or 100 rounds |
| Overall length: | 28-½ inches(34-½ inches with stock extended) |
| Barrel length: | 16 inches |
| Weight: | 3.7 pounds |
In 1986, the California Instrument Company introduced a 22 rim-fire semi-auto rifle, the Model 100, that had a unique helical-feed magazine with a capacity of 100 rounds. By 1989, the centerfire version was ready, in 9mm Parabellum, with 50-round and 100-round magazines. The M-951-S and M-951 Tactical Carbine are mechanically identical. There is also a handgun version, the Model M-950. The bolt is roller-locked, in a manner similar to the Heckler & Koch guns.
Disassembly:
1. Remove the magazine. Pull the stock out to the opened position, operate the stock latch again, and remove the stock toward the rear.
2. Pull the trigger to drop the striker to fired position. Push out the large cross pin just below the cocking handle. If it is installed left-to-right, the handle must be moved back slightly to clear it.
3. Remove the forend toward the front.
4. Move the pistol grip unit straight toward the rear for removal.
5. Lift the cocking handle out of its recess at the rear, and remove the handle and its spring toward the front.
6. Push the bolt assembly slightly to the rear from inside the feed opening at the top, and remove it downward.
7. Alternately retract the bolt