Section Ii Function and Operation

1 CAUTION — If you have not read the safety rules on the inside cover of this owners manual, please do so now before continuing.

2. IMPORTANT — The nomenclature ol the SR-9 operating parts and controls follow. Please study them so that you can better understand the operating instructions.

Froot algi'i

Nammer Weapon

Sâlety irtdicaîof

Waya/joe release buiio<\

(Figure 1A)

Froot algi'i

Sâlety irtdicaîof

Waya/joe release buiio<\

(Figure 1A)

Grip taic/|

Bultstoc* JocMng pr.3

Grip taic/|

Bultstoc* JocMng pr.3

3. OPERATING PRINCIPLE IN BRIEF

The weapon s loaded and cocked with the safety off.

Pulling the trigger releases the nammer, which strikes tne f ring pin. The cartridge is ignited The powder gases thusgenerated drive the bullet out of the barrel. At the same time these gases also exert pressure on the cartridge case.

This causes forces to act on the bolt heac face; a port on of these forces is transmitted to the receiver and a portion to the bolt head carrier via the locking piece; the angular ratio of the locking piece and barrel extension results in a delayed reaction movement of the bolt head. The bolt head must first roll the rollers in onto the locking picce to begin pushing the bolt carrier lo the rear before it and the bolt head carrier are free to move to the rear This guarantees that the bolt keeps the barrel locked until the bullet has left the muzzle

IUim (i nit« e* »»•*.'»» I nr»t* {MUiUwt»

(Figure 2 - Bolt m locked position)

After the locking rollers have been fuliy cammed into the bolt head, the bolt can continue its recoil movement. In the course of this movement, the empty cartridge case is ejected and the hammer recocked.

At tns same time, the recoil spring is compressed, which returns the bolt to its forward position. During the course of this process, a new round is chambered from the magazine. The extractor engages the extracting groove in Ihe cartridge case. As a resuit of the bevelled surfaces of the locking piece, the locking rollers are cammed into the supporting surfaces in the barre; extension. The weapon is now ready to fire again.

(Figure 3 • Bolt n unlocked position)

SECTION III - Ammunition

AMMUNITION WARNING NOTICE:

HECKLER & KOCH, INC. SPECIFICALLY DISCLAIMS ANY RESPONSIBILITY FOR ANY DAMAGE OR INJURY THAT SHOULD OCCUR BE-{ CAUSE OF, OR AS A RESULT OF, THE USE OF

) FAULTY, RE-MANUFACTURED,OR RELOADED

, AMMUNITION (HAND LOADED), OR MILITARY

SURPLUS AMMUNITION WHICH DOES NOT MEET SAAMI OR NATO SPECIFICATIONS, OR OF CARTRIDGES OTHER THAN THOSE FOR WHICH THE RIFLE WAS ORIGINALLY CHAMBERED IN 7.62 X 51 ALSO KNOWN AS .308 5 WINCHESTER OR 7.62 NATO.

The following guide :ines shou d be considered when selecting the correct ammunition for your rifle:

1. Be sure the ammunition you have chosen is compatible with your weapon; proper caiiber, designated 7.62 x 51. 308 Winchester or 7.62 NATO.

2. Prior to loading the magazine and chamber, carefully inspect all cartridges for the following abnormalities:

a. cracked or split cases b. improperly seated bullets and pr mers c. damaged burets d. corroded cases

WARNING: IMPROPERLY LOADED AMMUNITION CAN CAUSE DAMAGETOTHE RIFLE AND/OR DEATHOR SERIOUS INJURY TO THE SHOOTER OR BYSTANDERS.

3. Do not attempt to fire a round in which the projectile has been forced back into the case. This condition, upon firing may result in increased chamber pressure above safe limits.

4. Use of military surplus ammunition is risky. Some lots of military surplus ammunition are overpressure and/or primed with corrosive primers. Heckler & Koch, Inc. will not repair under warranty any 1-1K firearm damaged or ccrrcded by military surplus ammunition.

5. If you need advice on ammunition selection see ycur HK Authorized Dealership, or call our Customer Service Department at 1-703-450-1900.

Was this article helpful?

0 0

Post a comment