Crosman Air Pistol Owners Forum

Crosman air pistol - General => Crosman air pistol - General discussion => Topic started by: kev02 on February 23, 2014, 01:41:17 PM

Title: 1377 Gmac steel breech kit
Post by: kev02 on February 23, 2014, 01:41:17 PM
Hi guys I have just ordered the Gmac breech kit for my 1377 and should be with me on tuesday, what I want to know is does the kit come with the screw where the old sights used to go or is it ok to use the original one, bearing in mind this will go through the end cap as well.
atb kev02  ;) :-*
Title: Re: 1377 Gmac steel breech kit
Post by: targettgii on February 23, 2014, 03:31:17 PM
You can use the old screw but you will have to make it shorter.
Title: Re: 1377 Gmac steel breech kit
Post by: kev02 on February 23, 2014, 04:19:44 PM
How much do you think I will need to cut off the original screw, I know I have been asking alot of questions lately but I far rather be safe than sorry.
atb kev02 :-*
Title: Re: 1377 Gmac steel breech kit
Post by: GamoGat on February 23, 2014, 06:17:56 PM
I would wait for the kit to arrive and measure the bolt it comes with (possible chance it might vary from batch to batch)

Always use some washers or spacers to get going,  then chop down later.

Measure twice cut once  :-*
Title: Re: 1377 Gmac steel breech kit
Post by: Adam77K on February 23, 2014, 06:36:45 PM
As above, I put a washer across the top initially. I think I cut off about 4 or 5 mm, but measure first.
Title: Re: 1377 Gmac steel breech kit
Post by: kev02 on February 23, 2014, 08:42:30 PM
Hi guys thanks for the advice, will see what arrives with the kit, then I will decide on screw length using washers first before cutting.
atb kev02   ;) :-*
Title: Re: 1377 Gmac steel breech kit
Post by: brz-ryder † on February 24, 2014, 12:06:41 AM
If they use the same sizes as Crosman this is what you need
Rear Breech Long - CR Plastic 1 8-32x7/8" Button - 3/32" Hex
Rear Breech Short - CR Steel 1 8-32x3/4" Button - 3/32" Hex

Jim
Title: Re: 1377 Gmac steel breech kit
Post by: ped on February 24, 2014, 12:22:57 AM
Give Gary aka droid a pm and get one of his rebolt kits
ped