SBR reviews. Please weigh in!
- Thread starter pmbspyder
- Start date
Aceman58
Member
Yea, but you can use all the 5.56 parts encluding the mags. I like that a lot...but that is for another POST... Thanks..
Update: so I finally got to try the modified sbr I got back from Paul at ndz. The thing held open very well and would not close by getting bumped or inserting a mag. However, last shot hold open was still only about 30% of the time. I talked to Paul about it and they are working on a skeltonized version. He's not sure what's up, as users have had different experiences. Some have no issues and some have a lot (me). Either way, he's going to update me in a week once he's beta tested the newest one. I will let you all know how it is if I end up exchanging mine for that one (or a refund if necessary). Paul and ndz are great to deal with, I'm looking forward to seeing the newer version and hope it works on my rifle.
- Joined
- Aug 3, 2012
- Messages
- 3
- Reaction score
- 1
Gonna have to try it ACEMAN's way,mine failed 4 out of 5 25 rnd mags,from what I can see just looking at it the screw is too far to one side in my opinion,I thought about using some very small washers inside on the screw to keep the back plate from wanting to open up on the opposite side
Majorlk
Member
Just an observation ...
It would be very difficult to get the clamp screw more centered than it already is, from the looks of it. It's essentially the same as the MagPul BAD lever mounting scheme.
I'm curious to know if those that have modified the BAD lever to fir the 15-22 are having similar problems. I don't remember any discussion of this.
Ok Guys I went to the Range and ran some more tests on A SBR that we lightened to 5.5 grams the original one was 8 Grams. There are still some issues depending on what magazines I used. The problem seems to be the magazine spring tension. So I stretched the magazine springs in all my magazines and It worked. But I’m not sure that will be the ultimate fix. At this point this seems to be the only solution if you want to use the SBR.
Or you can take out the Bolt catch spring and clip it a little to lighten it up. I used 3 different kids of ammo as well Federal Bulk, Winchester, and some CCI.
Regardless of the ammo it was the same result. After I stretched my mag springs I was putting in 3 to 4 rounds in cycle them through the gun and the bolt held open every time.
My concerns is I’m sure after some time and loading the mags to 25 rounds full capacity you will have to stretch the springs again. I did put the 8 gram SBR back on my gun and ran all the mags with stretched springs, and the bolt held open with the heavier SBR as well.
There is all ready a known problem with last shot hold open and it has been talked about on this forum with stock guns. The problem seems to be the magazine springs and that fact that the surface contact area on the bolt and bolt catch is minimal.
At this time we are discussing if we are going to revise the SBR and make a version 2 that will be lighter.
This is an inherent issue with in the gun. So using our SBR can make the Last shot hold open fail more frequently. Then there are some that have no trouble at all.
This stinks all the way around and for the most part at the moment are hands are tied.
I will keep you guys informed as more things develop.
If any of you have any further questions you can call me at the office anytime M-F 8-4 EST 203-439-7784
thanks to you all for you support and understanding If you have one and it is just not working at all I will take it back no problem just contact me.
Paul
I will be out of the office until August 17th
Or you can take out the Bolt catch spring and clip it a little to lighten it up. I used 3 different kids of ammo as well Federal Bulk, Winchester, and some CCI.
Regardless of the ammo it was the same result. After I stretched my mag springs I was putting in 3 to 4 rounds in cycle them through the gun and the bolt held open every time.
My concerns is I’m sure after some time and loading the mags to 25 rounds full capacity you will have to stretch the springs again. I did put the 8 gram SBR back on my gun and ran all the mags with stretched springs, and the bolt held open with the heavier SBR as well.
There is all ready a known problem with last shot hold open and it has been talked about on this forum with stock guns. The problem seems to be the magazine springs and that fact that the surface contact area on the bolt and bolt catch is minimal.
At this time we are discussing if we are going to revise the SBR and make a version 2 that will be lighter.
This is an inherent issue with in the gun. So using our SBR can make the Last shot hold open fail more frequently. Then there are some that have no trouble at all.
This stinks all the way around and for the most part at the moment are hands are tied.
I will keep you guys informed as more things develop.
If any of you have any further questions you can call me at the office anytime M-F 8-4 EST 203-439-7784
thanks to you all for you support and understanding If you have one and it is just not working at all I will take it back no problem just contact me.
Paul
I will be out of the office until August 17th
Last edited:
Majorlk
Member
Paul,
I don't think there is anything wrong with either the design or the weight of the SBR itself. It all seems to go to the follower pressure against the bolt hold open latch. If that IS the problem, nothing you are going to do the the SBR will solve the problem.
IOW, it's a 15-22 problem, not an SBR problem.
I don't think there is anything wrong with either the design or the weight of the SBR itself. It all seems to go to the follower pressure against the bolt hold open latch. If that IS the problem, nothing you are going to do the the SBR will solve the problem.
IOW, it's a 15-22 problem, not an SBR problem.
Hey Guys We are going to do a version 2 of the SBR.
And lighten it up. Not sure yet as to when it will be done.
But we are not giving up on this.
Once again any questions feel free to call me or email me.
Hope everyone is well and getting some time to shoot.
Pauly
And lighten it up. Not sure yet as to when it will be done.
But we are not giving up on this.
Once again any questions feel free to call me or email me.
Hope everyone is well and getting some time to shoot.
Pauly
yugowego
Member
Be sure to post here when it is done... I will wait to get one of the new versions... Thanks
Majorlk
Member
Mine came in this afternoon and it took all of three minutes to install. Hopefully I can get to the range tomorrow afternoon to run a few tests with it.
One thing I did notice on the bench, though. If you have one of NDZ's oversize mag release buttons on your 15-22, there is only about 1/2" of separation between it and the SBR lever. It will be interesting to see if during fast mag changes the SBR is accidentally tripped.
Paul, I will let you know direct what happens.
One thing I did notice on the bench, though. If you have one of NDZ's oversize mag release buttons on your 15-22, there is only about 1/2" of separation between it and the SBR lever. It will be interesting to see if during fast mag changes the SBR is accidentally tripped.
Paul, I will let you know direct what happens.
Hey Major if you have any that don't hold open or hold open weak mark the mag and later measure the bolt catch push rod on the follower. The one mag I had that wouldn't hold open every time had a shorter push rod than the others. Like .055 short, that may be some of the problems people are having.
Majorlk
Member
Will do. Thanks for the reminder. I may measure them before I go to the range and segregate any that are shorter.
