Browning B-80 Owners Manual

							HOW TO REASSEMBLE THE BOLT ASSEMBLY— 
Hold  bolt with  firing pin  up  and place  bolt 
slide  into  position  by inserting it  into  the 
bolt recess.  Components should fit  flush, as 
shown in Figures 20 and 21. 
Insert  the  bolt  and  slide  assembly 
approximately  half  way  into  the  receiver 
and  maintain  their  position  with  hand 
pressure  from  the  side  while  the  action  bar 
and  sleeve  is  slipped  over  the  magazine 
tube  and  engaged  in  the  bolt  slide.  (See 
Figures 22 and 23.) 
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							Engage  the  link  into  the  action  spring 
follower.  See  Figure 24 and be certain bolt 
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							will  go  all  the  way  back  before  continuing 
assembly.  If the  bolt will not go back freely,  remove the  assembly and align  all 
components  carefully,  then  repeat 
procedure. 
Replace  the  operating  handle  into  the 
recess on the bolt.  (See Figure 25.) 
Install  the trigger  housing,  being  careful  to 
insert  the  main  spring  support  into  the 
recess.  Depress  the  cartridge  stop  and  bolt 
release  button.  Align  all  components  and 
replace  the  trigger  assembly  retaining  pin. 
(See Figure 26.)  41  
						

							Depress  the  carrier  release  and  draw  the 
bolt  rearward  until  it  locks  in  the  open 
position. 
Replace  the  gas  piston,  barrel,  forearm  and forearm cap assembly. 
Your  B
-80  is shipped with  a three  shot  adapter 
installed.  If  you  want  to  remove  the  adapter  to 
increase the  magazine’s  capacity,  proceed  as  follows: 
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							BE  CERTAIN  THE  GUN IS  NOT LOADED 
AND  “SAFETY”  IS  “ON  SAFE.”  WE 
RECOMMEND  THAT  SAFETY  GLASSES 
BE  WORN. 
Press  the  carrier  release. 
Lock the  bolt  to  the  rear. 
Remove  the  forearm  cap  assembly, 
forearm,  barrel  and  gas piston. 
Place  the  receiver,  loading port up,  in  a 
well padded vise. 
Locate  the  tip  of the  magazine  spring 
retainer  which  projects  through  its  port  in 
the  underside  of  the  magazine  tube. 
Using a  1/16  inch  diameter  punch,  depress 
the  magazine  spring  lock  and  use  a 
screwdriver  to  turn  the  slotted  head  of  the 
magazine  spring  retainer  and  forearm  cap 
stud  counter
-clockwise  1/4  turn  or  enough 
to bypass the lock spring’s function.  (See 
Figure 27.) 
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							Remove  the  punch  and  continue  turning 
the  magazine  retainer  and  forearm  cap  stud  until  three  threads  are  exposed.  At 
this  point  lay  the  screwdriver  aside  and 
proceed by  hand.  (See Figure  28.) 
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							NOTE:  The magazine plug is spring loaded 
and  under  tension.  Be  prepared  to  use 
both  hands  in  guiding  the  spring  out  of, 
and  back  into,  the  magazine  tube  once  the 
plug  has  been  removed. 
To reassemble, simply reverse the fore
- 
going  procedure  taking  care  to  depress  the 
magazine  spring  retainer  lock  spring  at  the 
point  where  it  prevents  the  final  turns  of 
the  magazine  retainer  and  forearm  cap 
stud.  (See Figure 29.) Be sure the lock 
spring  is  aligned  with  the  hole  in  the 
magazine  tube  when  you  complete  the 
reassembly. 
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							Your  shotgun  barrels  may  have  been  threaded  to 
accept  the  Browning  Invector  Interchangeable Choke System. You may confirm this by glancing 
on  the  right  side  of  your  barrel  where  the 
specifications are  inscribed,  or on  the  left side  of 
the  B
-80  breech  area  where  the  choke  markings 
are  normally located.  The  word,  Invector, 
denotes  that  the  barrels  are  threaded.  If  so, 
please follow these instructions. 
DO  NOT FIRE  THIS  SHOTGUN  WITHOUT 
HAVING  AN  INVECTOR  CHOKE  TUBE 
INSTALLED. 
Permanent  damage  may 
result  to  the  threads. 
Use  the  special  wrench  provided  to  firmly 
hand  tighten  the  choke  tube. 
The  gauge  and  degree  of  choke  are  indicated  on  each  Invector  choke  tube. 
DO  NOT  USE  BROWNING  INVECTOR  CHOKE 
TUBES  IN  ANY  SHOTGUN  BARRELS  NOT 
SUPPLIED  BY  BROWNING, 
as  described 
above. 
DO  NOT  USE  ANY  OTHER  CHOKING  DEVICE 
IN  ANY  SHOTGUN  BARRELS  SUPPLIED  BY 
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							BROWNING.  USE  ONLY  CHOKE  TUBES 
MARKED  INVECTOR. 
Replacement  or  additional  lnvector  choke  tubes 
and  wrenches  are  available  from  your  Browning 
dealer,  the  Browning  Service  Center  near  you,  or 
by  writing  to  the  Browning  Consumer 
Department, Route  1, Morgan, Utah 84050. 
Canadian  customers  please  call  or  write  to  Browning  Canada Sports  Ltd/Ltee, 
3167 De Miniac, St. Laurent, Canada H4S 1S0. 
(801) 543
-3200. 
(514) 333
-7261. 
The  gauge  and  choke  of  your  barrel  are  indicated  by  clearly  defined  marks  stamped  in 
the  upper  rear  surface  of  the  barrel.  The  code 
for the choke markings is as follows: 
Full  Choke  * 
Modified  Improved  Modified  *— 
Improved  Cylinder  **— 
Skeet  **S 
Cylinder  ***  ** 
INVECTOR  system  INVECTOR 
To identify individual INVECTOR tubes, refer to 
the  abbreviated  indications  on  the  side  of  the 
INVECTOR  CODE— 
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							tube,  or  use  the  identification  marks  located  on the  rim  of  each  tube. 
Full  I  Imp. Cyl. 
IIII 
Imp. Mod.  II  Skeet 
IIIII 
Mod.  III  Cylinder 
No marks 
As  pointed  out  earlier,  you  do  not  need  a  separate gun  to  shoot  3
-inch  Magnum  shells. 
Simply  interchange barrels.  You  can  use  the 
same  gun  for  multiple  shooting  conditions 
merely  by  changing  from  one  barrel  to  another 
with  a  different  choke,  length  and  chamber.  Barrels  of  the  same  gauge  are  completely 
interchangeable,  and  no  special  fitting  or  altering 
of the  gas system  is required.  Thus,  by  merely 
buying  another  barrel,  you  have  the  utility  of  another  gun  at  a  fraction  of  the  cost  of  a  new 
gun.  .  .  a  duck  gun  becomes  a  skeet  gun  or  a 
fine  upland  gun  by  the  mere  addition  of  an  extra 
barrel.  Please  see  your  Browning  dealer  for  barrel specifications available. 
GUN SHOOTS  TO  THE LEFT — Move  the  rear 
sight  to  the  right  by  first  loosening  the  small 
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