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AR-15 build set screw gas block w/delta ring
7.62x39Lover
Member Posts: 3,939 ✭✭✭
Hi guys!
I had endeavored to pin a standard AR-15 sight and gas block on an AR-15 barrel and failed miserably. I want to salvage the build by putting on a set screw type gas block. Do you guys think that I can successfully run a set screw type gas block with a delta ring type handguard pushing against it without cutting notches into the barrel for the set screws?
Should I try it without cutting notches, with cutting notches, or just find something without a delta ring?
I had endeavored to pin a standard AR-15 sight and gas block on an AR-15 barrel and failed miserably. I want to salvage the build by putting on a set screw type gas block. Do you guys think that I can successfully run a set screw type gas block with a delta ring type handguard pushing against it without cutting notches into the barrel for the set screws?
Should I try it without cutting notches, with cutting notches, or just find something without a delta ring?
Comments
That said, I've "assembled" several with set-screw gas blocks and standard handguards. None have come loose. Consider the "impulse" force of 50K psi gas trying to blow the gas block off the barrel during cycling.
If you don't feel confident with the set screws, add some "stud retainer" compound to the joint. Make sure you don't intend to change the gas block later or be prepared to cut the first one off.
I don't "build" AR's, I "assemble AR parts into a firearm".
That said, I've "assembled" several with set-screw gas blocks and standard handguards. None have come loose. Consider the "impulse" force of 50K psi gas trying to blow the gas block off the barrel during cycling.
If you don't feel confident with the set screws, add some "stud retainer" compound to the joint. Make sure you don't intend to change the gas block later or be prepared to cut the first one off.
Heat will break the bond of a locking compound (ex: Loctite Red)
550 degrees F should do the trick (localized)
http://henkeladhesivesna.com/blog/how-to-remove-red-threadlocker/
Because your using a rifle length gas tube. The above is critical. Because the longer the gas tube, the greater it's affect on required gas pressure to function the mechanism.
After you get it together, and test fire it. If your having short stroking and malfunctions. With commercial ammo. You might consider, opening up the gas port in the barrel. And use a gas block with a adjustable gas mechanism. To insure positive function.
There is a difference between "thread locking" and "stud retaining" compound. Red LokTite is nothing compared to stud retainer BTW.
Hi guys!
I had endeavored to pin a standard AR-15 sight and gas block on an AR-15 barrel and failed miserably. I want to salvage the build by putting on a set screw type gas block. Do you guys think that I can successfully run a set screw type gas block with a delta ring type handguard pushing against it without cutting notches into the barrel for the set screws?
Should I try it without cutting notches, with cutting notches, or just find something without a delta ring?
Perhaps this falls under personal preference, but having built a fair number to include the above titled 7.62X30 and a 458 SOCOM I'm most comfortable with the clamp type steel version. I'm not too particular about brand, but YHM comes to mind and always struck me as re-assuredly over built. They have a flip up sight version.