SS Inconsistencies: Q 2 Piece BCG

Trevor

Currently running a steel SS in my AR-15 and Sugar Weasel. Was getting some binding of the lever in both, so I dremeled out the shelf that sits at the bottom, back part of the upper. This made my AR-15 very consistent. I've ran hundreds of rounds without a single issue in my AR-15.

As for my Sugar Weasel, I've noticed that sometimes the BCG isn't picking up on the lever when being sent back forward. This results in the cam being rotated farther back than normal, putting the gun in the safe mode of active reset, not allowing the trigger to be pulled. The only conclusion I have is that the buffer retainer pin slot that sits on the bottom of the BCG is noticeably wider than a standard mil-spec BCG, resulting in the lever riding right through it. I measured the lever and slot on the BCG. The slot is ever so slightly wider than the tip of the lever, so this has to be what it is. This only happens sometimes, and it only happens when I'm firing it. If I'm manually cycling the gun, it never happens. No matter what I do, I can't replicate this while manually cycling it.

My question for the people with the same BCG, have you had this issue? If you've had the same issue with a mil-spec BCG, let me know. I'm curious if this same issue is happening with BCGs that have a standard width buffer retainer pin slot.

undeadchew

Hi Trevor, I have similar setup with the sugar weasel and 2 piece BCG except I am using a printed cam and hand filed lever right now. With function testing like you said everything seems to work. I plan on going shooting next weekend and I will let you know how my SS works in the Sugar Weasel w/ the 2 piece BCG. Also will be testing a 22 conversion in it. I honestly don't understand why the 2 piece carrier has so much play in it, perhaps if the buffer weight could slide inside and interface with the rear of the BCG like in the new Honey Badger BCG it would be able to guide the rear end and make it's travel more uniform.

I also have an AR15 with a mil spec BCG from PSA I built with CF Nylon cam and lever and have shot 3 mags of 556 flawlessly out of it with the SS.

Trevor

undeadchew

Let me know how it goes. On fresh mags when I was testing, I'd shoot a few in semi to make sure everything was cycling properly, then I would switch over to active reset. That's when I realized the cam was rotated the wrong way as I couldn't pull the trigger. If you could do this, that might trigger the same issue.

Obviously, the SS doesn't need the cam to be rotated a certain way to fire in semi as the cut goes all the way. So when I was firing in semi, the cam was rotated backward, but it didn't matter.

I need to go and test this more, but I didn't try going directly into active safe on a fresh mag. I'm sure if I did, it would fire fine as the lever never got stuck backward while firing in active safe, only before switching over to it.

The only way I was able to "fix" the SS was to cycle it manually. The BCG would pull the lever as intended and rotate the cam the correct way. After that it would fire in active safe flawlessly. I fixed and had this issue about 5 times. Every single time I cycled the BCG, it would properly pick up on the lever and rotate the cam, just as I'm doing now in my bedroom. I never had it to where it wouldn't pick up on the lever when cycling it manually. There is something causing this to only happen when being fired. Obviously things are different when you're firing a weapon as opposed to just function testing it. If this happens again when testing I'll just swap BCGs and see if that fixes it.

Trevor

undeadchew So I took a trip to the range today with a different BCG in my Sugar Weasel. 0 issues. I didn't shoot that much in active safe mode but the lever never got stuck when shooting in semi which is what my issue was.

I was charging my BCG a bit last night and noticed the lever was still binding a bit more than my AR-15 but it's only binding up when I charge the BCG very slowly (which obviously isn't ever happening). This might just be a spec issue with the Sugar Weasel that will happen regardless of the BCG that you use.

My final conclusion on this is since the buffer retainer pin slot on the Q BCG is just slightly wider than the tip of the lever, this will happen occasionally. However, it depends on the positioning of the lever. Obviously, the lever has to be positioned perfectly in the middle for it to glide through the slot on the BCG.

Edit: I wonder If someone could make something that attaches to the bottom of the BCG that would make the gap smaller. I don't really know how it would work but I'm just throwing that out there.