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Exposed Hammer Drop Test Procedure

H.P. White Laboratory, Inc.
HPWLI Job No. 7342-01
(Sheet 2 of 3)
DATA RECORD

Date: 17 March 1997

-SAAMI Drop Test-
ANSI/SAAMI Z299.05-1990
(Pistols and Revolvers)

Gun Description: North American Arms, Inc. .22 Magnum

Procedure, Exposed Hammer Drop Test - Conduct either Procedure A or B. All six "drops" of either procedure are to be conducted using a single sample of the model of gun being evaluated. A second sample may be used to conduct the second (light or heavy configuration) series of six "drops".

A. Drop with full magazine (cylinder), primed case under the hammer in the "safe carrying" condition from a height of 3 feet (measured from gun's hammer spur) with the muzzle up to cause the hammer spur or exposed striker to be the initial point of impact with a mild steel block weighing a minimum of 50 pounds.

B. Mount gun in the condition described in A (muzzle down bearing on a mild steel block weighing a minimum of 50 pounds) and drop a mild steel weight equal to the weight of the lightest and heaviest configurations of the gun.


Test Gun (Serial
Number)
Weight
(lbs)
Trigger Pull
(lbs)
Impact Surface Fire No Fire
A/B-01 Z37225 .40 3.70 Hammer Spur/Striker   X
A/B-02 Z37225 .40 3.70 Hammer Spur/Striker   X
A/B-03 Z37225 .40 3.70 Hammer Spur/Striker   X
A/B-04 Z37225 .40 3.70 Hammer Spur/Striker   X
A/B-05 Z37225 .40 3.70 Hammer Spur/Striker   X
A/B-06 Z37225 .40 3.70 Hammer Spur/Striker   X
REMARKS- (a) Weight Fully Loaded - .45 pounds.


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