User Panel
User Panel
User Panel
|
Posted: 12/8/2003 3:39:01 AM EDT
[#1]
use a nail set to start the 3mm cross pins moving. finish driving them out with a drive pin punch (3/32" = .093" punch).
then, use an arbor press or hydraulic press to push the gas and sight base blocks off the barrel. they can be 'beat' off the barrel with a hard wood block and hammer, but the risk of damage is much greater. to install, reverse the procedure. yes, you will have to re-zero your sights after a rework of this nature. |
|
|
|
Posted: 12/12/2003 7:38:31 PM EDT
[#2]
CAMPYBOB,
Thanks for the tips, however, I have several other questions. First, the barrel is installed into the receiver (since this rifle is new)so how do I go about using a hydraulic press or arbor press to remove the front sight assembly and gas block. Could a person use something like bearing puller? Also, just how tight are these put on. You obviously have done several before so have you taken pictures of the process or do you know anyone who has? thanks for your help Juliet25 |
|
|
|
Posted: 12/12/2003 11:21:21 PM EDT
[#3]
Every one I ever pressed off required more pressure than removing a barrel from the trunion. They were not Saigas, though. You may need a heavy support block or plate with a slot milled in it to support the sight/gasblock, and a way to protect the end of the barrel while pressing. Half assed methods will likely lead to screwed up parts. The last one I did was a Bulgy 74, and the block and sight did not start moving till I got to about 2 1/2 tons. Good luck.
Pete |
|
|
|
Posted: 12/13/2003 6:55:17 AM EDT
[#4]
when the gas/sight blocks are drilled for the cross pins, they are done on the bbl.
the drilling process raises a burr that smears the two pieces into a mechanical 'lock', if you will. once the burr is overcome by travelling the blocks about 1/16"-1/8", they usually slide pretty easily. like shortfal said, the tonnage/pressure spike goes up right off the bat just trying to overcome the burr(s). i just block my bbls. vertical and rest a piece of scrap aluminum under the gas/sight block. pad the muzzle with a piece of brass and start building pressure. it has been my good fortune that most of the gas/sight blocks start moving in the 500-1000 lb. range on my press dial (most assuredly, this piece of equipment is NOT calibrated). i have run into those that needed more persuassion. the sight base is easier to remove and install than the gas block, imo...just due to the ease at which leveraging the bbl. is avoided. as always, work SAFELY! steel under pressure is a bomb waiting to go off! |
|
|
Win a FREE Membership!
Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!
You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.
AR15.COM is the world's largest firearm community and is a gathering place for firearm enthusiasts of all types.
From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm.
Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more.
Copyright © 1996-2024 AR15.COM LLC. All Rights Reserved.
Any use of this content without express written consent is prohibited.
AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own.
