PDA

View Full Version : New bbl installation - bbl clamp vs. receiver clamp?


Armati
07-14-08, 09:51
Ok, so I am installing a new bbl. Now, the TM has us clamping the bbl in a vice. However, several makers offer different types of blocks for clamping the upper receiver in the vice. Is one better than the other? Thanks.
rob_s
07-14-08, 10:02
I prefer to clamp the upper, but don't guess it would really matter.
Failure2Stop
07-14-08, 15:16
Receiver clamp.
warpigM-4
07-14-08, 16:02
Receiver clamp.
hey F2S
I am looking to buy a receiver clamp i the next few days,I was looking at the one steve has at ADCO ,but youhave to use a piece of wood and put the upper in sideways to clamp in enough to install a barrel.Is this a good one or should I go with the dpms style clamp???help me Obe wan you are my only hope!!!:D Thanks man
Failure2Stop
07-14-08, 16:14
hey F2S
I am looking to buy a receiver clamp i the next few days,I was looking at the one steve has at ADCO ,but youhave to use a piece of wood and put the upper in sideways to clamp in enough to install a barrel.Is this a good one or should I go with the dpms style clamp???

I just went off of gotM4's advice (HERE (https://www.m4carbine.net/showthread.php?t=7463)) and went with the DPMS one, you can get it from brownells HERE (http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=17094&title=AR-15+UPPER+RECEIVER+BLOCK).

gotM4 is effing Yoda, I am barely one of those little padowans that got slaughtered by Young Darth!
warpigM-4
07-14-08, 16:17
I just went off of gotM4's advice (HERE (https://www.m4carbine.net/showthread.php?t=7463)) and went with the DPMS one, you can get it from brownells HERE (http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=17094&title=AR-15+UPPER+RECEIVER+BLOCK).

gotM4 is effing Yoda, I am barely one of those little padowans that got slaughtered by Young Darth!Outstanding!!!!:D thats what I will get,man thats funny as hell I choked on my drink reading this
:eek:
spamsammich
07-14-08, 17:05
I have a clamshell type upper receiver block and it used to leave marks until I took a file and "deburred" the device a bit. The marks they leave are just plastic so they came off the teflon coating of the upper with ease. I'm also looking to get a DPMS style upper block so I don't have to strip my upper of the optics.
TWR
07-14-08, 18:53
I have used 2 hard wood blocks when working on AR-10's. I never had a problem but prefer the clamshell type, if they made one for AR-10's I would've bought one.
jackinfl
07-14-08, 20:39
I used the clam shell one, until Robb GotM4 recommended the BLOCK. I think it is a better product as you can use it for more things than just changing barrels. I use it as a third hand to install BUIS, aimpoints, and you do not need to "modify" them to install LaRue rails like you do the clam shell types.

Jack
Robb Jensen
07-14-08, 20:41
I just went off of gotM4's advice (HERE (https://www.m4carbine.net/showthread.php?t=7463)) and went with the DPMS one, you can get it from brownells HERE (http://www.brownells.com/aspx/ns/store/ProductDetail.aspx?p=17094&title=AR-15+UPPER+RECEIVER+BLOCK).

gotM4 is effing Yoda, I am barely one of those little padowans that got slaughtered by Young Darth!

I'm far from Yoda brother, just a student of the system myself.
BUBBAGUNS
07-15-08, 16:11
I have used both methods. I like the the receiver clamp, But some people don't like it. As long as the alignment pin is tight in the receiver notch, it shouldn't matter.
scottryan
07-15-08, 21:48
I prefer the clam shell type. If you put a rag in between it and the upper, you will not scuff the upper.

I do not like the type that go inside the upper and you have to put a steel pin in the take down holes.

There is a risk of transferring unwanted torque to the upper on this type.
spamsammich
07-15-08, 21:51
I prefer the clam shell type. If you put a rag in between it and the upper, you will not scuff the upper.

I do not like the type that go inside the upper and you have to put a steel pin in the take down holes.

There is a risk of transferring unwanted torque to the upper on this type.

My uppers fit pretty tight in my Brownells clamp, I think if I wanted to protect it, I'd have to use something thin like a cheesecloth. The uppers I use are teflon coated so the marks come right off with a little rubbing and since I deburred the high spots and edges of the clamp, there have been no marks. I think both styles definitely have their place on my bench though.