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PostPosted: Tue Jan 05, 2021 11:44 pm 
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does anyone have a diagram on this model gun the trigger is so hard to pull i cant believe it dont have a lot of knowledge about direct sear trigger tuning any help would b apreciated or if there is a parts swap i can do that would b great and i stripped the stock it was full of putty really let down so far after all reviews and things i read i think chinese airguns are love or hate so far on the hate side but dont want to be

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PostPosted: Tue Jan 05, 2021 11:50 pm 
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Be careful working on the trigger sear of that gun. There are many reports of accidental firing from these that people have modded. Start with a good cleaning and lubrication. Look for burrs or rough surface on the sear engagement point.

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PostPosted: Wed Jan 06, 2021 12:11 am 
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There is a link in this thread to a downloadable document with all the info you will need.

topic20120.html?hilit=%20Bam%20B4%20Trigger

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PostPosted: Wed Jan 06, 2021 1:35 am 
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The stock might not look too good with stain if it's full of putty. Maybe try some brown or black leather dye from Michael's or your favourite craft or leather shop.

A good polishing and some moly paste helps with the trigger. Don't reduce engagement too much on these direct triggers.


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PostPosted: Wed Jan 06, 2021 1:02 pm 
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thanks i was also wondering if anyone has built a replacent trigger system for this gun have a mill lathe and full shop at my disposal was thinking about makinb new system or copyinb someone elses the box that the trigger mech is me think i can make something up that will work better than this

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PostPosted: Wed Jan 06, 2021 1:25 pm 
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great tip for the leather dye on the stock Never would of thought of that
ANYONE HAVE A USED OLD STOCK THIS ASSEMBLY WOULD FIT IN LET ME KNOW THANKS

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PostPosted: Wed Jan 06, 2021 4:01 pm 
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Location: Thunder Bay
Todd has the right idea. Don't try to make a target trigger out of one of these primitive triggers. It will be unreliable. Polishing and a little moly paste will make a very shootable trigger. I reworked the triggers on both my B3s like this and they're both very shootable and 100% reliable. About 2kg and a little creepy. No machining necessary.

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PostPosted: Wed Jan 06, 2021 7:07 pm 
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im going to try the lube and polish tonight then i just cant believe how much pull it takes measured about an hour ago it was 21lbs out of this world

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