Drwg No E Op Seqfull Auto

Modifications To Be Made To Weapon

A. Machine lug off of lower right side of receiver flush with adjoining surface as indicated in the drawing. This is required to provide clearance for the operation of the disconnector assembly.

B. A slot is machined into the upper flange as indicated. This provides clearance for the tripping lever which will extend through this flange.

C. A # 6-32 threaded hole is machined into the receiver as indicated for attachment of the Disconnector assembly with the pivot screw.

A single cut is made into the slide as indicated on the drawing. This will provide clearance for the top of the tripping lever, and also establish a contact point which the tripping lever engages during the forward movement of the slide.

3. Secondary Sear - Drawing # 3C

The secondary sear is machined in such a manner as to provide an easy and quick method of assembling the Disconnector-Secondary Sear Pin to the Secondary Sear. The pin is inserted through the large hole in the secondary sear until the small diameter of the pin matches the slot in the secondary sear. Slide the pin over in the slot until the smaller of the two holes is reached, and then pull the pin out until it firmly locks with the secondary sear. The plastic retaining clip can then be attached to the small diameter of the pin to prevent the pin and sear from accidentally coming apart. Use the fixture previously described when machining this part.

The stock must be machined to provide clearance for the disconnector assembly. The tolerance for these cuts are not critical, as long as adequate clearance is provided. However, the location of the pivot screw hole should be matched as closely as possible with the # 6-32 threaded hole in the receiver. This can be determined by scribing a vertical line on the receiver through the center line of the * 6-32 hole up onto the side of the flange. With the receiver in the stock, this line can be transferred back down on the outside of the stock to establish its vertical centerline. The horizontal centerline can be located by measuring the distance from the bottom of the flange to the center of the # 6-32 hole, on the receiver. With the stock and receiver assembled, measure down from the bottom of the flange on the outside of the stock and scribe the measured distance. This establishes the point to be machined to accept the pivot screw.

(RIGHT SIDE VIEW)

(RIGHT SIDE VIEW)

Ruger Mini Receiver

(BOTTOM VIMl')

OPERATION # 3

(BOTTOM VIMl')

OPERATION # 3

OPERATION 0 1 - MILL RIDGE (LOWER) OFF OF RECEIVER WALL UNTIL FLUSH

WITH SURFACE 'A*

OPERATION # 2 - DRILL # 36 (.IO65) THROUGH RECEIVER WALL AND THREAD

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