Crosman no longer provides
 Crosman 1377 BRASS VALVES,
 They are no longer available as new from Crosman.


Crosman Custom Airgun Parts 1377 1322

For information on Crosman 1377 1322 Parts, E-mail using link below


Pre-Install Tip |  Valve Before & After | Valve Mod Tips | 13xx Diagram | See the valve boring in process | Removing Roll Pins Video |
| Crosman Rebuilds
| Crosman 1377 Manual
Trigger Set


Eliminates spring wobble & Reduces trigger weight & pull Includes plunger, spring, spring cup and trigger works with stock safety or with brass as shown
See the trigger Guide Mounted

To determine if you have a
 2 screw or 3 screw cover see link below

| Two screw & Three Screw Cover |

Crosman Safety Pin
Drop in Brass Replacement

Works with Crosman Stock Plastic or Brass Triggers.



Crosman Custom Brass Trigger Fits the 1377 & 1322  and 2289

To determine if you have a
 2 screw or 3 screw cover see link below

  | Two screw & Three Screw Cover |

Brass Triggers for the Crosman 1377 and 1322
the face of the trigger is 1/4 inch wide as well
as  increased lug width to reduce side to side wobble

The Mallard trigger is for the new 3 screw cover


Fits 2 Screw Cover

Fits 3 Screw Cover


  Flat-top Pistons Includes

1 Bottle of Original Airgun Oil
3 90d O-rings 3 70d O-rings
1 Oil Wiper

Install instructions

New Installation Instructions in the works

 Oil Ring Replacement  Piston Oiling instructions
For a larger Image click here

We can machine your valve to fit the Flat Piston

Valve Before & After  machining for flat piston

Or you can purchase a modified valve
 that is flat to fit the piston and is
ported for better airflow



Brass Flat-top Piston & Aluminum Valve Set
This is for shipping outside USA,
Shipping cost reflects the cost of shipping to non-USA address 

1. Brass Flat-top Piston
1. Aluminum Flat-top Valve
1. Bottle Airgun Oil
1. Oil ring
3. 90d O-rings
3.70d O-rings

Brass Piston and Valve Combo
Custom Made & Limited.
 Fits all 1322, 1377 and 2289
 Crosman Airgun Pistols


Crosman 1377 1322
 Sear Spring Guide


In order for the sear spring guide to work with the adjustable sear you will need to grind away the protruding nub from the sear click to see what to remove be sure to remove all rough and uneven surfaces
Choice: Round or Hexagon Base
No changes need with the stock sear needed

Crosman 1377 Complete
Flat-top Piston & Valve Rebuild Kit


Brass Flat-top Piston
Valve Stem & Spring
Check Valve
Check Valve Body O-rings inner & outer
Pump Cup Seal
Face Seal
Bolt Seal 22 or 177
If you have an older through bolt
you will need a large O-ring
Airgun Oil


Flat-top Piston O-ring Set

 Three - 70d Piston Rings
Three - 90d Piston Rings
One Valve O-ring to Tube O-ring
One Valve Body O-ring

Piston Oil Rings pack of 3


Custom Brass Breeches




Valve New Modified
 Crosman 1377 & 1322

See  valve configuration
For a larger Image click here

See Larger Port of The Ported Valve

    We can rebuild  your old valve
 with a new stem seal see image

Modified valves  are new with
exhaust channel enlarged then ported & polished, machined flat to fit a flat-top piston with valve stem relief ground to promote better air flow. If you would like the valve to fit a stock crosman piston add a note in the paypal that you would like a valve to fit a stock piston otherwise all custom valves will be shipped with a flat surface to fit a flat-top piston 


| Crosman 1377 Parts | Custom Crosman Airgun 1377 Parts |

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