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11.2. LET-OFF ADJUSTMENT
| The information presented here is for educational purposes only. Please consult a professional gunsmith before and after conducting any work on a firearm...... In other words be smart about it, and use this info intelligently. |
11.2.1. General
Only
the armorer trained on the assault rifle is authorized to undertake let-off
adjustments.
The let-off is correctly adjusted if the let-off
cam of the sear lies upon the let-off spring arm and the sear notch is still
only slightly engaged with the hammer notch.
During
let-off adjustment, the hammer may not strike against the trigger housing.
The let-off is to be adjusted so that it is clearly
felt with the winter trigger.
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| Seriefeuersperre,
Winterabzug und Druckpunktvorriclitung 56 Anschlagstift 60 Seriefeuersperre 68 Winkelhebel mit Stift 69 Zwischenhebel 71 Federarm fOr Winterabzug 72 Druckpunktfederarrn 73 Druckpunktreguliermutter 75 Seriefeuerklinke 85 Winterabzug 92 Druckpunktnocken der Abzugstange |
(Above Left) Trigger group, shown for clarity without sear and trigger. Part #60 is the white tab that signifies a semi-auto rifle. (Above) Diagram depicts actual safety positions. |
11.2.2. Carrying Out the Adjustment
Sequence of Tasks!
1) Unload weapon!
2) Let-off inspection by the armorer
3) Remove trigger mechanism from the weapon
4) Inspection of trigger components (in detail, if necessary)
5) Mount clamping lever for let-off adjustment and clamp until the let-off adjustment nut protrudes from the hole in the trigger housing
6) With special socket wrench, turn the let-off adjustment nut as appropriate
7) Insert trigger mechanism (hammer cocked)
8) Re-inspect let-off on the assembled weapon
9) Carry out functional inspection accord 4 ng to paragraph 10.1.2.
Note:
Trouble Remedy
Figure 86
Adjusting
the let-off
A.
Correctly adjusted let-off
Figure 87
Correctly adjusted let-off
The let-off cam of the sear (b) presses against the let-off spring arm. The sear and hammer notches (a) are still only slightly engaged.
B. Unadjusted let-off
Figure 88
Let-off drags
The let-off cam of the sear (b) presses against the let-off spring arm. The sear and hammer notches (a) are too strongly engaged.
If the let-off adjustment nut is loosened all the way, the release pawl can no longer engage the sear (c).
Figure 89
Let-off too weak (or no let-off present)
The let-off cam of the sear presses against the let-off spring arm. The sear and hammer notches, however, are too slightly engaged (the let-off is too weak).
If the let-off adjustment nut is tightened all the way, the letoff cam of the sear does not reach the let-off spring arm (b). The sear notch releases the hammer (a) (no let-off is present).
Last Modified on March 17, 1999
