BCL102 "back and forth" sliding noise

D

dsmart

Member
Rating - 100%
4   0   0
Im very new to the AR platform so if this question is basic dont judge. I just unboxed my BCL102 and noticed when I tilt it back and forth there is some noise like something is moving back and forth in the upper. I've read that buffer tube weights sometimes make a similar noise so possibly that's what im hearing but it seems odd that any rifle would make that much noise by just moving it around.
 
Take the upper off, shake the lower. Hold slight pressure on the buffer and shake it again. If the noise stops that’s your culprit. If the noise continues I’m not sure what it would be.
 
Took the upper off and the noise is definitely coming from the buffer tube assembly. I put pressure on it and the noise doesnt go away so perhaps there is something going on inside. Haven't taken it apart yet to inspect but dont want to fire the gun till I can confirm that its good in there.
 
Well the next step is to remove the buffer and spring from the buffer tube. I really hope it’s just the spring making noise, or the weights in the buffer. Shake the buffer, most people don’t notice this noise but someone new to the platform might.
 
I have noticed the same thing on mine, but cant confirm if mine was always making this noise and im just noticing it now but I don't remember hearing it this first few times I picked it up
 
In most AR type buffers (I've never held a BCL102 buffer), there are three little weights. Sometimes the weights are steel, other times they are tungsten. Buffers come in different weights. On a 5.56 carbine, for example, you had Normal, Heavy and Heavy 2. Normal is 3 steel weights, Heavy is two steel weights and a tungsten weight and H2 is 2 tungsten weights and a steel weight. There is also an H3 buffer, but it's not real common.

The heavier the buffer, the slower the action cycle time, but if you run an H3 in a normal M4 carbine, many ppl report short-stroking. In some over-gassed or short-barelled guns you need the extra mass.

The BCL102 uses an AR pattern buffer, so likely it has 3 weights in it of some mix/match variety. That's probably what you are hearing.

If you are adventurous, there back of the buffer should have a nylon plug pinned on it. If you drift out the pin and remove the plug, the weights will slide out. If the noise bothers you, you could pack a couple .22 calibre cleaning patches into the buffer assembly to take up any loose space and prevent the weights from moving.
 
Claven2 said:
In most AR type buffers (I've never held a BCL102 buffer), there are three little weights. Sometimes the weights are steel, other times they are tungsten. Buffers come in different weights. On a 5.56 carbine, for example, you had Normal, Heavy and Heavy 2. Normal is 3 steel weights, Heavy is two steel weights and a tungsten weight and H2 is 2 tungsten weights and a steel weight. There is also an H3 buffer, but it's not real common.

The heavier the buffer, the slower the action cycle time, but if you run an H3 in a normal M4 carbine, many ppl report short-stroking. In some over-gassed or short-barelled guns you need the extra mass.

The BCL102 uses an AR pattern buffer, so likely it has 3 weights in it of some mix/match variety. That's probably what you are hearing.

If you are adventurous, there back of the buffer should have a nylon plug pinned on it. If you drift out the pin and remove the plug, the weights will slide out. If the noise bothers you, you could pack a couple .22 calibre cleaning patches into the buffer assembly to take up any loose space and prevent the weights from moving.
Click to expand...

Thanks for the info, when I get more comfortable with the rifle I will check that out. For now I'm still scratching my head at how to clean it.. lol. First ever AR platform rifle I've owned or shot and it didn't come with a manual
 
You clean it the same as any AR15. There's tons of videos on youtube.

d12guage said:
Thanks for the info, when I get more comfortable with the rifle I will check that out. For now I'm still scratching my head at how to clean it.. lol. First ever AR platform rifle I've owned or shot and it didn't come with a manual
Click to expand...
 
Claven2 said:
In most AR type buffers (I've never held a BCL102 buffer), there are three little weights. Sometimes the weights are steel, other times they are tungsten. Buffers come in different weights. On a 5.56 carbine, for example, you had Normal, Heavy and Heavy 2. Normal is 3 steel weights, Heavy is two steel weights and a tungsten weight and H2 is 2 tungsten weights and a steel weight. There is also an H3 buffer, but it's not real common.

The heavier the buffer, the slower the action cycle time, but if you run an H3 in a normal M4 carbine, many ppl report short-stroking. In some over-gassed or short-barelled guns you need the extra mass.

The BCL102 uses an AR pattern buffer, so likely it has 3 weights in it of some mix/match variety. That's probably what you are hearing.

If you are adventurous, there back of the buffer should have a nylon plug pinned on it. If you drift out the pin and remove the plug, the weights will slide out. If the noise bothers you, you could pack a couple .22 calibre cleaning patches into the buffer assembly to take up any loose space and prevent the weights from moving.
Click to expand...

I wouldn’t do that, they move for a reason. Look into buffers and bolt bounce, the extra inertia is there to lock the bolt in place so there isn’t an out of battery discharge.
 
You must log in or register to reply here.
Back
Top Bottom