Heckler&Koch HK45 COMPACT TACTICAL - Manual (Page 12)

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HK45 & HK45 Compact
WARNING: Do not rely on the slide lock to determine if the magazine is
empty. Always check visually and physically to ensure that the pistol is not
loaded.
Magazine Release Lever
This ambidextrous, spring actuated lever holds the magazine in place within the
grip by engaging in the notch located on the front of the magazine housing.
Depressing this lever downward with the firing index finger or thumb will allow
the magazine, regardless of the number of cartridges inside, to drop free of the
frame. The magazine release lever is shielded from accidental actuation by the
design of the polymer frame and trigger guard surrounding it.
Frame
All sides of the reinforced polymer frame are textured to ensure a firm grip,
even with wet hands or under conditions of rapid fire. The trigger guard is
extended and grooved to provide a firm grip when using two hands or gloves
to fire the pistol. The frame is a one-piece molded component with metal
inserts cast into the frame during production. The slide rides on these metal
inserts during operation. The frame contains a MIL-STD-1913 (Picatinny) rail
for accessory attachment and finger recesses located to the left and right of
the magazine well for manual extraction of the magazine, if needed. The serial
number of the pistol is engraved in the metal insert incorporated into the front
of the frame in front of the trigger guard, on the barrel locking block, and on
the left side of the slide.
Sights and Sight Adjustment
The sighting system on the HK45 is the proven 3-dot arrangement first made
popular on earlier model HK pistols. By aligning all three dots horizontally
on the target, with the front sight dot centered between the rear sight dots,
the operator can quickly and easily engage the target with a high degree of
accuracy (Figure 7).
Figure 7 Rear and front sight aligned
With optional tritium sights installed, precise and rapid target engagements
are possible under low light conditions as well. The rear sight can be adjusted
for windage by drifting the sight to the left or to the right, depending on the
desired shot placement. Bullet impact on target will move in the same direction
that the rear sight is moved. Be careful not to damage the slide finish when
adjusting the rear sight.
Adjustments for elevation is accomplished by exchanging the front sight with
a taller or shorter sight, available from HK. The height of the front sight is
indicated on the underside of the sight. The front sight must be removed by
using a drift punch or the HK sight pusher. The accessory HK sight pusher can
be used to install, remove, and adjust the front and rear sights on all HK45
pistols.
To raise the bullet impact on target, a shorter front sight is installed. To lower
the bullet impact on target, a taller front sight is installed. Installing the next
taller or shorter front sight will change the point-of-impact approximately 2
inches at 25 meters, depending on the firer and the ammunition used. All
HK45’s are function fired and zeroed at the factory at 25 meters, point-of-aim,
point-of-impact. Your actual zero may vary depending on the ammunition used
and/or your style of shooting. Optional click adjustable sights are available with
and without self-luminous tritium dots for all HK45 pistols.
Standard Sights
Item Part Number POI Shift from 6.5mm Sight
Front Sight (6.1mm) 234327 4 inches higher @ 25 meters
Front Sight (6.3mm) 234328 2 inches higher @ 25 meters
Front Sight (6.5mm) Standard 234329 Theoretical POA=POI @ 25 meters
Front Sight (6.7mm) 234386 2 inches lower @ 25 meters
Front Sight (6.9mm) 234387 4 inches lower @ 25 meters
Extended Sights for use with Suppressor (under development)
Item Part Number POI Shift from 10.7mm Sight
Front Sight (10.3mm) 234470 4 inches higher @ 25 meters
Front Sight (10.5mm) 234471 2 inches higher @ 25 meters
Front Sight (10.7mm) Standard 234472 Theoretical POA=POI @ 25 meters
Front Sight (10.9mm) 234473 2 inches lower @ 25 meters
Front Sight (11.1mm) 234474 4 inches lower @ 25 meters
“Tactical” HK45 Pistol
The HK45 or HK45 Compact “Tactical” pistols have all of the features found on
the standard pistol with the addition of the following:
• extended threaded barrel
• high profile front and rear sights (under development)
Extended barrel and muzzle threads
The HK cold hammer forged polygonal barrel is engineered for increased
accuracy, improve service life and user safety in case of obstructed bore
occurrences. The left hand threads used on the barrel of the HK45 tactical
pistol barrels will accept only those accessories designed for the pistol. Locking
serrations are provided at the muzzle to prevent loosening of the sound
suppressor during use. An optional threaded cap is available to protect the
threads during use and rough handling.
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