Beretta AL 391 Instruction Manual

							2120WARNING: Check the firearm is unloaded (cartridge chamber empty, receiver
empty, magazine tube empty). Check that the firearm is unloaded by looking
through the ejection port, the loading gate and the chamber. If the shotgun is
not unloaded, unload it as described in the chapter “Unloading the firearm”.
Lower the hammer on the unloaded gun by pulling the trigger.WARNING: Never point a firearm at someone or at hard and flat surfaces.
Treat the firearm as if it were loaded. (See points 1, 2 and 4 of the BASIC
SAFETY RULES).CAUTION: Use only the supplied hook wrenches to screw and unscrew the
valve assembly locking nut and counter-nut. These spanners are designed
and have the right dimensions to produce the correct driving torque when a
force of medium intensity is applied. Never attempt to use different wrenches
which could produce an excessive driving torque. Do not apply excessive
force when using the supplied spanners.CAUTION: Before starting the disassembly of the exhaust valve assembly,
carefully observe the position of the components parts. This will be of great
help during the reassembly operations. SPECIAL MAINTENANCEEXHAUST VALVE ASSEMBLYl
Remove the barrel from the shotgun. 
lUnscrew the valve assembly counter-nut using the supplied hook wrench, operatingcounterclockwise. (Fig. 29)
l
Unscrew the valve assembly nut using the supplied wrench. (Fig. 30)
l
Slide from the valve shaft the spring, the valve and the valve centering ring.
(Fig. 31)
l
Slide from the gas cylinder the valve shaft. (Fig. 32)
l
Thoroughly clean the parts with Beretta gun oil. If necessary, use a bronze brush.DISASSEMBLY AND CLEANINGEvery 3000-5000 rounds (according to the type of ammunition used) and in anycase at the end of the hunting season, before storing the shotgun, in addition
to the Routine Maintenance, also perform the following Special Maintenance
operations.CAUTION: Be careful not to damage the threaded surfaces with excessive
rubbing.l
Carefully dry  with a soft cloth.
l
Lightly oil the parts with Beretta gun oil.WARNING: Do not store firearms in places which are or could be accessible
by children or other persons whose unfamiliarity with firearms might lead to
unsafe use. Always store your firearms securely and unloaded, separate from
ammunition. (See point 3 of the BASIC SAFETY RULES).l
Insert the operating rod into the breech bolt slide slot. (Fig. 37)
l
Depress the carrier stop push-button. (Fig. 4)
l
Holding the stock/receiver assembly on a table with the ejection port facing upward,
slide the operating rod sleeve on the magazine tube (the breech bolt rests on the
operating rod) and partially insert the breech bolt inside the receiver. (Fig. 25)
l
Holding the stock/receiver vertically, slide the operating rod sleeve downward, com-
pressing the recoil spring until the breech bolt hooks into the OPEN position. (Fig.
38)NOTICE: To carry out the described operation with ease, the head of the
breech bolt connecting rod must rest in the recoil spring guide housing. This
will easily occur when the connecting rod is perfectly coaxial to the breech bolt
and centered in the cocking handle slideway of the receiver.l
Insert the cocking handle into the breech bolt slide and push it until it clicks home.
(Fig. 24)BARRELl
Check the barrel. The bore and cartridge chamber must be clean and free from ob-
structions.
l
Insert the piston into the gas cylinder. (Fig. 6)
l
Check that the breech bolt is in the OPEN position.
l
Partially slide the barrel tang into the receiver, taking care that the piston does not
drop out of the gas cylinder and that the magazine tube cap shaft enters the piston
hole as well as that of the gas cylinder and the valve assembly. (Fig. 7)
l
Slide the barrel tang home into the receiver. (Fig. 8)
l
Slide the fore-end into place over the gas cylinder, valve assembly and magazine
tube. Check that the fore-end is perfectly centered on the receiver face. The fore-
end is correctly assembled when there is no space left between the parts. (Fig. 9)
l
Place the front swivel ring (if desired and supplied) on the fore-end flange and com-
pletely tighten the fore-end cap. (Fig. 10)
l
Close the breech bolt by depressing the breech bolt release button, keeping your
fingers away from the ejection port. (Fig. 11)CAUTION: While depressing the breech bolt release button to close the
breech bolt, make sure that the cut-off is not inadvertently engaged. Should
this occur, the breech bolt would be kept OPEN by the cut-off lever. In this
case, always keeping your fingers away from the ejection port, close the
breech bolt by operating the cut-off. (Fig. 12)l
Keeping the breech bolt retracted approximately 2 cm (1 inch), depress the trigger
to lower the hammer.(Fig. 13) 
						

							2322WARNING: Check that the firearm is unloaded (cartridge chamber empty, re-
ceiver empty, magazine tube empty). Check that the firearm is unloaded by
looking through the ejection port, the loading gate and the chamber. If the
shotgun is not unloaded, unload it as described in the chapter “Unloading the
firearm”. Lower the hammer on the unloaded gun by pulling the trigger.WARNING: Never look into the muzzle  or change tubes  on a loaded gun
even with safety engaged.NOTICE: Beretta Mobilchoke®
SP (Steel-Proof) screw-in chokes tubes have
been specially designed to take the punishment of non-toxic steel shot.
For best results with steel shot, Beretta recommends a modified choke. Full
choke constriction when using steel shot does not increase pattern density
and often distorts normal pattern density associated with lead. 
Remember that standard old type Beretta Mobilchoke®
tubes were not de-
signed for steel shot. Before shooting steel shot cartridges check that the
Beretta Mobilchoke®
tubes are marked SP.MOBILCHOKE®
TUBESCHANGING AND CLEANING THE CHOKESl
Unscrew (counterclockwise) the choke using the supplied spanner.(Fig. 39)
l
Carefully clean the choke housing. If necessary, use a patch sprayed with Beretta
gun oil.
l
Carefully dry the choke housing using a soft patch.
l
Insert the desired choke into the choke housing, checking that it is perfectly clean
inside and outside. (Fig. 40)
l
Manually screw on (clockwise) the choke. Tighten it with the multiple spanner.WARNING: During the hunting or shooting day, under safe conditions
(firearms unloaded with cartridge chamber empty, receiver empty, magazine
empty and breech bolt in OPEN position) check whether the choke has
worked loose. Should this happen, the choke must be tightened again using
the supplied spanner.WARNING: Remember that you should never use a Mobilchoke®
barrel with-
out a Mobilchoke®
tube inserted. Shooting without the choke tube is danger-
ous and can damage the barrel’s internal screw thread irreparably. WARNING: Never point a firearm at someone or at hard and flat surfaces.
Treat the firearm as if it were loaded. (See points 1, 2 and 4 of the BASIC
SAFETY RULES).NOTICE: These operations must be carried out by a competent gunsmith.NOTICE: Wholesalers, dealers or gunsmiths (unless they are a Repair Station
authorized by the Manufacturer and/or by its Local Official Distributors) are not
authorized to make any Warranty repair or adjustment on behalf of the
Manufacturer.l
Insert the valve shaft into the gas cylinder, letting the shaft lugs enter the cylinder
recesses. (Fig. 33)
l
Place the valve centering ring, the valve and the valve spring around the valve shaft
. 
l
Make sure that the valve is assembled with the outside recess turned to contain the
first coil of the spring. (Fig. 34)
l
Manually screw the valve nut on the valve shaft until tight. 
l
Using the supplied hook wrench, tighten the valve nut against the valve centering
ring. 
l
Manually screw the valve counter-nut on the valve shaft until tight against the valve
nut.
l
Keeping the valve nut tight using one of the two hook wrenches, tighten the
counter-nut against the nut with the other wrench. (Fig. 35)REASSEMBLYMAGAZINE CAPACITYThe magazine tube capacity of the AL391 Urika (which has a three-round capacity)
has been limited to two rounds by the application of a plug in order to comply with the
sporting gun laws in force in many countries.
This plug, which is factory mounted, reduces the capacity of the AL391 Urika to no
more than three rounds (two in the magazine, one in the chamber).
In some areas, shooting is allowed only with shotguns having a capacity of no more
than two rounds. 
To use the AL391 Urika in these areas, it will be necessary to limit the magazine ca-
pacity to only one round. 
It is possible to increase the magazine capacity from two to three rounds in the coun-
tries where it is allowed.CAUTION: Do not apply excess oil: accumulation of oil attracts dirt which can
plug the barrel and interfere with the functioning and reliability of the gun. 
						

							2524l
Put the spacer ¿around the stock
bolt tube. Make sure that the
spacer shows on the top the drop
and cast wanted (“C-60-DX” in the
drawing).
l
Put the rear plate ¡and the washer in
the back hole of the stock until the plate
reaches its own seat in the stock. Make sure
that the plate shows on the top the same drop
and cast of the spacer on the top (“C-60-DX” in
the drawing). 
l
Use the screwdriver to center the plate and the
washer.
l
Assemble the stock, making sure to locate the stock bolt
tube through the rear plate ¡and the washer. Also make  sure
that the front spacer ¿is centered between the stock and the re-
ceiver. (During this operation keep the shotgun vertical with the
barrel down).
l
Using the spanner, screw on and tighten the stock retaining nut with a
torque of about 1,6/1,8 kgm (11.6/13.0 Ftlb) (Kg meter). A torque wrench is useful
for this purpose.
l
Screw on the recoil pad.WARNING: The improper observance of this procedure could cause damage
to the shotgun and/or injury to the  bystanders.NOTICE:This operation must be carried out by a competent gunsmith.RECOIL PADThe standard plastic butt-plate or rubber recoil pad can be replaced with a rubber re-coil pad of different thickness without any adjustment. By assembling rubber recoil
pads of different thickness it is possible to modify the length of pull.l
Remove the recoil pad using the screwdriver.
l
Disassemble the stock using the spanner and take off the spacers.NOTICE: The “DX” mark on the spacer and on the plate means “cast-off”, the
“SX” mark means “cast-on”. The stock drop measures are in millimetres. The
stock drop and cast of the spacer ¿must always correspond to those of the
metal plate ¡.NOTICE: Stock drop and cast modification must be carried out by a compe-
tent gunsmith.STOCK DROP AND CAST MODIFICATIONCHANGING THE STOCK DROP AND CAST SPACERSNECESSARY TOOLSThe Beretta AL391 Urika  semi-automatic shotgun is factory set with a heel drop of
55 or 60 mm. (2.16” or 2.36”) (field, sporting, skeet models), of 40 mm. (1.57”) (trap
models) and cast-off (right-handed shooters).
The components which determine the drop and the cast are: 
¿Receiver-stock spacer made of technopolymer, fiber-glass reinforced.
¡Stock metal plate.
Both the spacer ¿and the plate ¡are designed to secure two different drops with
cast-off or with cast-on (for left handed shooters) depending on how they are assem-
bled.
Other measures of stock drop can be obtained using the supplied extra set of spac-
ers.l
Screwdriver.
l
Hexagonal tube spanner (13 mm).
l
Torque wrench (suggested).WARNING: Check that the firearm is unloaded (cartridge chamber empty, re-
ceiver empty, magazine tube empty). Check that the firearm is unloaded by
looking through the ejection port, the loading gate and the chamber. If the
shotgun is not unloaded, unload it as described in the chapter “Unloading the
firearm”. Lower the hammer on the unloaded gun by pulling the trigger.WARNING: Never point a firearm at someone or at hard and flat surfaces.
Treat the firearm as if it were loaded. (See points 1, 2 and 4 of the BASIC
SAFETY RULES). 
						

							26NOTICE: This operation must be carried out by a competent gunsmith.Reverse the safety and insert it into its housing from the left to the right side of the
firearm and click it into position, keeping the safety plunger depressed.CAUTION: The safety plunger spring, when mounted, is in a compressed con-
dition. Take care not to lose the plunger and its spring.REVERSIBLE SAFETY BUTTONThe safety button is factory assembled to be engaged by pushing it from the left to
the right side of the receiver and disengaged in the opposite direction with the index
finger of the right hand (right-handed shooters).
By reversing the safety button, the safety is engaged by pushing from the right to the
left side of the receiver and is disengaged in the opposite way by using the index fin-
ger of the left hand (left-handed shooters).
To invert the safety button:
Cock the hammer. Keeping the safety plunger depressed with a drift punch, push the
safety out of its housing (from the right to the left side of the firearm).WARNING: Check that the firearm is unloaded (cartridge chamber empty, re-
ceiver empty, magazine tube empty). Check that the firearm is unloaded by
looking through the ejection port, the loading gate and the chamber. If the
shotgun is not unloaded, unload it as described in the chapter “Unloading the
firearm”. Lower the hammer on the unloaded gun by pulling the trigger.WARNING: Never point a firearm at someone or at hard and flat surfaces.
Treat the firearm as if it were loaded. (See points 1, 2 and 4 of the BASIC
SAFETY RULES).27NOTE: 
						

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							3031323334353637383940Le illustrazioni e descrizioni di questo opuscolo si intendono fornite a titolo indicativo. La Casa si riserva pertanto il
diritto di apportare ai suoi modelli, in qualsiasi momento e senza preavviso, quelle modifiche che ritenesse utili per
migliorarli o per qualsiasi esigenza di carattere costruttivo e commerciale.
The illustrations and descriptions given in this brochure are intended as a general guide only, and must not be taken
as binding.The Company, therefore, reserves the right to make, at any moment and without notice, any changes it
thinks necessary to improve its models or to meet any requirements of manufacturing or commercial nature.
Les illustrations et les descriptions contenues dans ce prospectus ne sont données quà titre indicatif. La Maison se
réserve le droit de modifier, à tout moment et sans préavis, ses modèles pour les améliorer ou pour nimporte quelle
exigence de caractère constructif et commercial.Beretta Pubblicità - cod. 61160
2/99 (5)Printed in ItalyBatan - Gardone V.T.