This breech does not fit older model 1377 air pistols with a sliding breech cover.Why ??? http://www.pyramydair.com/s/a/Crosman_177_Cal_Steel_Breech_Kit_Fits_1377_1740_1760_PC77_Air_Guns/4386 (http://www.pyramydair.com/s/a/Crosman_177_Cal_Steel_Breech_Kit_Fits_1377_1740_1760_PC77_Air_Guns/4386)
The sliding breech uses another type of barrel/probe
The Crosman steel breech will fit on the phase II 13xx.
You'll need a newer barrel due to the bolt probe.
The steel breech will not fit on a phase I 13xx.
They have a steel breech with the barrel peened in place and the pump tube is not drilled and tapped for the #4-48 front breech screw.
Thanks for clearing that up,Is there a steel breech that will fit the phas 1 (direct fit ) no fabrication needed 8)
Quote from: cmj21973 on November 24, 2012, 04:07:16 PM
The Crosman steel breech will fit on the phase II 13xx.
You'll need a newer barrel due to the bolt probe.
The steel breech will not fit on a phase I 13xx.
They have a steel breech with the barrel peened in place and the pump tube is not drilled and tapped for the #4-48 front breech screw.
is that info correct?
because not all phase 1 1377s are made that way mine wasnt.the 1300 has a 1 piece steel beech/barrel combo and that was removeable too.
this is the first time i have heard that the phase 1 breech is not removable ???
my phase 1 1377 was made the same way as my phase 2 and the steel breech and current barrel/bolt worked on my phase 1
the breech and the barrel is one pice on the phase 1 i can that but again they can be seperated
heres my phase 2 rear cocker with steel breech
http://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,9373.0.html (http://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,9373.0.html)
heres my phase 1 1377 with phase 3 breech and barrel
(http://i613.photobucket.com/albums/tt211/edf73/P2210281-1.jpg)
tipper1
if your gun looks like this with the same grip frame
slide the breech open in front of the bolt where you drop the pellet in look and see if there is a screw there it will be kind of small.if you can take a pic and post it here of the spot where the pellet drops in with the slide cover opened so we can see what you are working with
(http://i613.photobucket.com/albums/tt211/edf73/P2210281-1.jpg)
Just the original steel breech.
I plan to make to make a breech, with 3/8 rail or tapped for scope mounts.
A couple of set screws to hold barrel in place instead of peening it in place.
I'll be using steel, aluminium, and black Delrin.
Quote from: cmj21973 on November 24, 2012, 05:23:01 PM
Just the original steel breech.
I plan to make to make a breech, with 3/8 rail or tapped for scope mounts.
A couple of set screws to hold barrel in place instead of peening it in place.
I'll be using steel, aluminium, and black Delrin.
you know the phase 1 1377 tube is drilled and tapped with a 4-48 screw right?
I'm still on the road, but will be home around 11pm EST tonight.
Typing on smart phone is a F'n PITA!
pic phas 1 ??(http://i1101.photobucket.com/albums/g431/mybike2/DSCN3703.jpg)
Quote from: tipper1 on November 24, 2012, 07:58:05 PM
pic phas 1 ??(http://i1101.photobucket.com/albums/g431/mybike2/DSCN3703.jpg)
just as i thought
you can put a any aftermarket crosman steel breech or other aluminum,brass breech on your phase 1 1377.just make sure the breech you get has the 4-48 breech screw hole in this position also known as the old breech screw location
you will need the current bolt and barrel too
1377x that would be this one correct ?? http://www.pyramydair.com/s/a/Crosman_177_Cal_Steel_Breech_Kit_Fits_1377_1740_1760_PC77_Air_Guns/4386;jsessionid=B8B41E79C0478EA2D6BB543A1FC4D75E.app01 (http://www.pyramydair.com/s/a/Crosman_177_Cal_Steel_Breech_Kit_Fits_1377_1740_1760_PC77_Air_Guns/4386;jsessionid=B8B41E79C0478EA2D6BB543A1FC4D75E.app01) :-* can't see where screw hole is
Quote from: tipper1 on November 24, 2012, 09:03:57 PM
1377x that would be this one correct ?? http://www.pyramydair.com/s/a/Crosman_177_Cal_Steel_Breech_Kit_Fits_1377_1740_1760_PC77_Air_Guns/4386;jsessionid=B8B41E79C0478EA2D6BB543A1FC4D75E.app01 (http://www.pyramydair.com/s/a/Crosman_177_Cal_Steel_Breech_Kit_Fits_1377_1740_1760_PC77_Air_Guns/4386;jsessionid=B8B41E79C0478EA2D6BB543A1FC4D75E.app01) :-* can't see where screw hole is
yes it is!
remember you have to get the new style barrel also since the kit comes with a bolt
call the number listed
http://www.crosman.com/cs/manuals (http://www.crosman.com/cs/manuals)
ask for crosman part number 1377-075
thats for the stock 1377 barrel pc77/phase 3 1377 barrel..it should be @ $12 shipped or up to $16 depending on cost of barrel shipping is a $4 flat fee so buy as many needed parts as necessary like extra o-rings for the valve just in case you go flat top and cut the outer o-ring when installing the valve extra safety bearings and springs bolt o-rings they can go faster than the others being the bolt gets opened and closed quite a bit
the numbers for the o-rings are floating around the forum or just go to the link posted find 1377 get the numbers there.the o-rings are the same for all phases except the bolt get the numbers from the phase 3/pc77 evp for correct numbers for all parts
if you want a longer barrel then you will need a discovery 24" barrel cut and crowned at desired length
Thankyou Thankyou :-* 1377x , also did the breech take the wobble out of the barrel (side to side )
Quote from: tipper1 on November 24, 2012, 10:12:57 PM
Thankyou Thankyou :-* 1377x , also did the breech take the wobble out of the barrel (side to side )
oh yeah!! :-*
it has a set screw that secures the barrel, so no rotation, no wobble best thing you can do with the gun
second best thing is to add a flat top piston and valve
when i was ordering piston and valve I didn't get the flat top >:( another day thanks for ya help be ordering again (lol)
Quote from: tipper1 on November 24, 2012, 11:45:06 PM
when i was ordering piston and valve I didn't get the flat top >:( another day thanks for ya help be ordering again (lol)
who are you getting the flat top parts from?
I didn't get the flat top,I got the stock one instead complete kit from ebay,I am looking at the steel breech and barrel now so i can mount a red dot 8) ??? can i send in the brass piston head get flat top put on it ??? i seen that somewhere
$5, you mail it to him.
http://mellonair.myfreesites.net/index.php?p=1_11_FT-Piston-Valves (http://mellonair.myfreesites.net/index.php?p=1_11_FT-Piston-Valves)
Free with piston purchase I'm guessing.
http://www.airgunsmith.com/cros1377/cros1322-77.htm (http://www.airgunsmith.com/cros1377/cros1322-77.htm)
Quote from: tipper1 on November 25, 2012, 01:43:37 PM
I didn't get the flat top,I got the stock one instead complete kit from ebay,I am looking at the steel breech and barrel now so i can mount a red dot 8) ??? can i send in the brass piston head get flat top put on it ??? i seen that somewhere
steel breeches are easy to come by
pyramyd,crosman mac-1 and others stock them
personally i like the Anthony R breech the most out of all the breeches availeable.it comes with everything needed light as can be and was $56 shipped.stock is limited and he also has left hand breeches too.just have to check and see if they are avaiable
if you want a longer barrel then you will need a discovery 24" barrel cut and crowned at desired length
[/quote] if i was to do this will i lose power,is it louder //
Quote from: tipper1 on November 28, 2012, 03:18:48 PM
if you want a longer barrel then you will need a discovery 24" barrel cut and crowned at desired length
if i was to do this will i lose power,is it louder //
as of now only if you want to stay .177 do you need the discovery .177 24" barrel as far as i know the 24" 2260 barrel is still available
you will definitely gain power and the gun gets a little quieter
what does it mean you need to crown barrel ????? can i do this ???? ???
Quote from: tipper1 on November 28, 2012, 09:22:31 PM
what does it mean you need to crown barrel ????? can i do this ???? ???
yes it is something you can do
[youtube]https://www.youtube.com/watch?v=gsg-Yt6t-HM#ws]Gunsmithing - The Importance of the Muzzle Crown for Accuracy[/url]
[youtube]https://www.youtube.com/watch?v=R0wBeJcIovc#]DIY Cut and Crown Rifle Barrel - Additional Tips and Unique/Cheap Crowning Bit/Cutter[/url]
That is some great info 1377x :-* thanks i will try this 8) you ever try to use a pipe cutter instead of the saw ? i think that would be a much cleaner cut.
Quote from: tipper1 on November 29, 2012, 01:26:24 PM
That is some great info 1377x :-* thanks i will try this 8) you ever try to use a pipe cutter instead of the saw ? i think that would be a much cleaner cut.
pipe cuters dont give a clean cut and imo shouldnt be used on a barrel
because the pipe cutter will leave a lip inside the barrel the would need to be filed down destroying the very thing you are trying to correct
pipe cutters dont leave a true 90* cut either
Ok there goes that idea,I'm learning today thanks :-* you must of tried it LOL.
I missed it, but did you get yourself a new transfer port tube and gasket when you ordered the new barrel and steel breech? I don't believe you can re-use the old one.
Quote from: Fronzdan on November 29, 2012, 07:38:33 PM
I missed it, but did you get yourself a new transfer port tube and gasket when you ordered the new barrel and steel breech? I don't believe you can re-use the old one.
why cant he use the old the old one?
he can use the old one but its likely he has updated parts since someone took the brass valve out
even so all he needs is the evo mod to get a solid barrel to transfer port seal
Aren't the old transfer port sleeves different than the current ones? They are the same on both sides. I thought these didn't fit well with the new barrels.
Quote from: Fronzdan on November 30, 2012, 05:28:02 AM
Aren't the old transfer port sleeves different than the current ones? They are the same on both sides. I thought these didn't fit well with the new barrels.
like i said before with the evo mod they work fine.the only problem is with the short port it leaks there no other issue,the evo mod stops the leak
i know this from experience.if you dont want to do the evo mod then get the new style transfer port.because the OP already placed his order there was no sense in going into the new transfer port vs the old transfer port.it made more sense to tell'em how to stop the leaking with the evo mod