Troubleshooting a bcl102 issue need help

M

Mixter

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So my bcl 102 was having fte and ftf issues. I have only used power shok 180 grain so far as I didn’t want to waste good ammo trying to figure this out.
I have installed a superlative arms adjustable gas block. Doesn’t seem to make a difference. Have tried different mags and no difference.
I’m thinking it’s maybe a buffer spring issue?
I didn’t install the gas block properly?
The ammo? ( doubt it)

Any thoughts on what it might be? Anything else to trouble shoot?
 
But the bolt isn’t going back after firing...would that be an ejector issue?
Also if I tap the stock with my hand it slams the bolt shut if I have it locked open. That’s why I was thinking maybe the buffer spring?
 
The bolt slamming forward is a result of the terrible bolt catch they put in it. Mine does this as well.

If the bolt isn’t coming back after firing the rifle is under gassed. Open up the gas block some more or try a lighter bullet.
 
Mixter said:
So my bcl 102 was having fte and ftf issues. I have only used power shok 180 grain so far as I didn’t want to waste good ammo trying to figure this out.
I have installed a superlative arms adjustable gas block. Doesn’t seem to make a difference. Have tried different mags and no difference.
I’m thinking it’s maybe a buffer spring issue?
I didn’t install the gas block properly?
The ammo? ( doubt it)

Any thoughts on what it might be? Anything else to trouble shoot?
Click to expand...

Did you read the instructions that came with your new gas block? You have to set it up correctly for it to work.
Was it functioning fine before you installed the gas block?
 
Yes I read the instructions during installation...the issues were happening before the gas block, hence why I bought the adjustable one. I’ll double check the installation
 
Mixter said:
Yes I read the instructions during installation...the issues were happening before the gas block, hence why I bought the adjustable one. I’ll double check the installation
Click to expand...

Did it ever work properly?
Check your gas rings and the inside of the bolt carrier where the rings ride. Some of the earlier ones had bad machining in there and it wore out the gas rings very quickly.

If it was having problems before you changed the gas block I would put it back to all original BCL parts and send it back for warranty service. If you bought a new car and it didn't work would you take it back for warranty or would you just fix it yourself? Same thing here, if it doesn't work send it back (without aftermarket parts).
Also, if people don't let BCL know about problems they have no way of knowing that they need to make corrections on the production line. Hold them accountable and make them fix their product.
You should not need an adjustable gas block to make a rifle run, an adjustable gas block is for fine tuning not function correction.

You may also want to try using different ammo. Not wanting to waste "good ammo" (whatever you think that is) is kinda silly since not all semi auto rifles will cycle all factory made ammo. Your rifle was designed (by Eugene Stoner not BCL) to fire 147-150 grain FMJ not 180gr hunting rounds. It should cycle them but your ammo might be your problem. You are not running a bolt action which is what that ammo was designed to be used in.

Just a guess but is this your first AR type rifle?
 
Last edited:
cr5 said:
Did it ever work properly?
Check your gas rings and the inside of the bolt carrier where the rings ride. Some of the earlier ones had bad machining in there and it wore out the gas rings very quickly.

If it was having problems before you changed the gas block I would put it back to all original BCL parts and send it back for warranty service. If you bought a new car and it didn't work would you take it back for warranty or would you just fix it yourself? Same thing here, if it doesn't work send it back (without aftermarket parts).
Also, if people don't let BCL know about problems they have no way of knowing that they need to make corrections on the production line. Hold them accountable and make them fix their product.
You should not need an adjustable gas block to make a rifle run, an adjustable gas block is for fine tuning not function correction.

You may also want to try using different ammo. Not wanting to waste "good ammo" (whatever you think that is) is kinda silly since not all semi auto rifles will cycle all factory made ammo. Your rifle was designed (by Eugene Stoner not BCL) to fire 147-150 grain FMJ not 180gr hunting rounds. It should cycle them but your ammo might be your problem. You are not running a bolt action which is what that ammo was designed to be used in.

Just a guess but is this your first AR type rifle?
Click to expand...

Some excellent points here for the OP.
 
cr5 said:
Did it ever work properly?
Check your gas rings and the inside of the bolt carrier where the rings ride. Some of the earlier ones had bad machining in there and it wore out the gas rings very quickly.

If it was having problems before you changed the gas block I would put it back to all original BCL parts and send it back for warranty service. If you bought a new car and it didn't work would you take it back for warranty or would you just fix it yourself? Same thing here, if it doesn't work send it back (without aftermarket parts).
Also, if people don't let BCL know about problems they have no way of knowing that they need to make corrections on the production line. Hold them accountable and make them fix their product.
You should not need an adjustable gas block to make a rifle run, an adjustable gas block is for fine tuning not function correction.

You may also want to try using different ammo. Not wanting to waste "good ammo" (whatever you think that is) is kinda silly since not all semi auto rifles will cycle all factory made ammo. Your rifle was designed (by Eugene Stoner not BCL) to fire 147-150 grain FMJ not 180gr hunting rounds. It should cycle them but your ammo might be your problem. You are not running a bolt action which is what that ammo was designed to be used in.

Just a guess but is this your first AR type rifle?
Click to expand...

Wow! Thanks for all of the info! I am new to ARs and unfortunately a buddy picked up the ammo for me (180grain) so I was trying t use it up. By “good ammo”. I Meant more expensive ammo for hunting vs plinking.
It was having issues before I changed the gas block. I’m going to try different ammo (168 grain) today and see how it goes.
Once again thanks for the informative post.
 
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