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MIL-DTL-63997 Rifle, 5.56 Millimeter: M16A2This detail specification prescribes the requirements and identifies the verification procedures for the lightweight, air-cooled, gas operated, magazine-fed, 5.56 millimeter \(mm\) weapon designed for either three shot automatic burst or semi-automatic fire, hereafter referred to simply as the weapon.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20


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MIL-DTL-63997C
TABLE II. Requirement/verification cross-reference matrix ­ Continued
Verification
Verification
Section 4
Methods
Class/Qty.
Section 3 Requirement
Method
1234
A
B
Magazine release button and
3.4.6.2
-
-
x
-
100% 1/
100% 1/
Table IV
bolt catch interaction
3.4.7.1.1
Semi-disconnect motion
-
-
x
-
100%
1/
100%
1/
Table IV
3.4.7.1.2
Semi-disconnect action
-
-
x
-
100%
1/
100%
1/
Table IV
3.4.7.2.1
Burst disconnect motion
-
-
x
-
100%
1/
100%
1/
Table IV
3.4.7.2.2
Burst disconnect action
-
-
x
-
100%
1/
100%
1/
Table IV
Trigger hammer cocked
3.4.8.1
-
-
x
-
100% 1/
100% 1/
Table IV
position
Trigger normal position upon
3.4.8.2
-
-
x
-
100% 1/
100% 1/
Table IV
full trigger pull
Trigger normal position upon
3.4.8.3
-
-
x
-
100% 1/
100% 1/
Table IV
partial pull
3.4.9.1
Trigger guard motion
-
-
x
-
100% 1/
100% 1/
3.4.9.2
Trigger guard open retention
-
-
x
-
100% 1/
100% 1/
Table IV
Trigger guard closed
-
-
x
-
100% 1/
100% 1/
Table IV
3.4.9.3
retention
3.4.10.1
Pivot pin motion
-
-
x
-
100% 1/
100% 1/
Table IV
Pivot pin retention in extreme
3.4.10.2
-
-
x
-
100% 1/
100% 1/
Table IV
in position
Pivot pin retention in extreme
3.4.10.3
-
-
x
-
100% 1/
100% 1/
Table IV
out position
3.4.11.1
Takedown pin motion
-
-
x
-
100% 1/
100% 1/
Table IV
Takedown pin retention in
3.4.11.2
-
-
x
-
100% 1/
100% 1/
Table IV
extreme in position
Takedown pin retention in
3.4.11.3
-
-
x
-
100% 1/
100% 1/
Table IV
extreme out position
3.4.12.1
Pistol grip retention
-
-
x
-
100% 1/
100% 1/
Table IV
3.4.12.2
Pistol grip position
-
-
x
-
100% 1/
100% 1/
Table IV
3.4.13.1
Buttstock assembly retention
-
-
x
-
100% 1/
100% 1/
Table IV
Buttstock component
3.4.13.2
-
-
x
-
100% 1/
100% 1/
Table IV
retention
3.4.14.1
Buffer assembly motion
-
-
x
-
100% 1/
100% 1/
Table IV
3.4.14.2
Buffer assembly retention
-
-
x
-
100% 1/
100% 1/
Table IV
Buffer assembly disassembly
3.4.14.3
-
-
x
-
100% 1/
100% 1/
Table IV
from lower receiver
3.5.1.1
Barrel assembly straightness
-
-
x
-
100% 1/
100% 1/
Table IV
Barrel assembly angular
3.5.1.2
-
-
x
-
100% 1/
100% 1/
Table IV
deviation
Barrel assembly angular
3.5.1.3
-
-
x
-
100% 1/
100% 1/
Table IV
deviation
20



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