Gas blocks for ar15,3 position, pt2
 

Redesigned the gas blocks.Now closed position is totally closed.Other positions are lo and high pressure.Requires cutting about 15/16" off the back of the gas tube.New is a on-off block with the button.This was requested by law and military.They want a simple open or closed solution.I call this block the milspec.
Shown are stainless steel and the very first prototypes.

I am very Happy with your gas blocks Buy with confidence!
 

I received them in a timely manner good fit and finish excellent price.

I had to modify one a bit for my own special purpose situation but for a normal carbine length tube it would not have had to be done. (I ordered 2 and the carbine install went without a hitch) The mod i made was to bend and shorten the pin that is used to select the gas port so that it would clear the free float tube with this mod i also had to mill a slot in my free float tube. I am a machinist so no big deal.

I am very happy with the gas block especially for the price especially as this is a niche part.

Thanks for building a quality part at a great price

DOC

tp555 I got the 3 pos gas block and have to say nice job on the fitting of the valve. I was concerned about how much leakage there would be but seems there is very little and off is definitely off. I have to decide which of two barrels I am going to use it on. Thanks again.

pug

Thanks.I used a reamer for the cut.The SS blocks had .001" more clearance then the carbon steel ones. I made 5 blocks in this batch.

I dont know if this is the place to post this but. This is a perfect piece. When he says .750....he means .750 not .751 but .750. I had to turn .005 off my barrel to make it work, I assumed these would fit like half of the other AR parts out there....sloppy. I was wrong. Great machining, fast service perfect product. I have been waiting for something better than the JP block and this is it. I can shoot my 220's sub, flip the knob and shoot my 125's supersonic and still retain the 1/2 inch groups at 100 yrds!!


Matt in Moscow


(might half to order a spare knob to play with)

I need one of these for a Noveske 10.5"
 

I would like one of these to fit a Noveske 10.5, the style that you use a wrench through the hand guard to adjust it. I bet Noveske is shipping alot of these barrels right now so it would be worth making a run to fit them!

Gas Block question
 

tp
I'm having a guy build a upper for me without a gass block. If I got one of yours, does this mean I could switch back and forth from single shot to semiauto ? ( I'm new to this )

Thanks One shot

Yes.The MILSPEC gas block is on or off.

TP, is the ss milspec available and how much is it? Also the 3 position ss with the handle. Was planning on putting it on a PacNor 10.5", ss, 1/6.5", 3 land bbl. Any advantages or disadvantages to pistol or carbine length gas tubes w/ either?
Thanx.

I make them.It is $60 includes shipping for either.Gas blocks don't have anything to do with their location,pistol or carbine.They control gas flow or pressure level.The 3 position does high,low or off.

PM sent to you
 

I'd like one.

Incredible work man, are these still available? I actually found this forum due to an arfcom search looking to do something like this..... this is perfect.

Yes I make them.PM me for details.

by any chance is the 3 position one adjustable for "low" gas?

The ports on this are: wide open 1/8", restriction about .082" and closed.regards.

Is there anyway to make a changeable to experiment with tuning?
(open, closed and adjustable)

You are welcomed to post details here. I would prefer that you post in the classifieds and if one sells there is a link to list an identical. There is no cost to buy or sell in the classifieds!

http://www.quarterbore.net/forums/vbclassified.php

I am interested in these. Do you make them in .625 as well as .750?
Also what is the availability at this time?
Thanks, FH

Yes it can be made with a .625" bore.PM me.

Will your 3 position work with 223 AR like a Noveske switchblock ?
I have a Noveke with the switchblock and it works well for taming
down the strong blowback through the action when using a can
and was hoping your block would work the same way on another
AR.

My gas blocks work on any ar that uses gas system.Also on ar10's.Haven't seen the Noveski system.Three position or two position blocks are available.What do you need?

.
A 3 position .750 ID stainless please :wink:

I sent you a PM Tp555. Thanks!

Are these still available? PM sent.

cant tell you how much your gas block helps on the AR 300 platform. Running a 10.5 300/221 barrel and 3 pos tp555 block, 1.25 gas port, semi auto BC, old school light weight carbine buffer (plastic looking one), loosest car spring I could find (get an old one you have put a lot of rounds through) , and a tuned jewell trigger makes for one excellent sub or supersonic setup. One thing I learned using the low pressure setting is that the weapon will not cycle without the assistance of my suppressor with 950fps 220smk's. which I got to cycle the bolt all the way down to 7.2g of acc#9, OUTSTANDING!!!! Without your gas block you would be hard pressed to formulate a setup which gives both sub and supersonic cycling without a major part change on the rifle. Thanks again tp555 and for you people that are having problems, you need to give them a shot. Also the completely closed setting is awesome for some truly quiet shooting!!!
Thanks again TP555