I tried to zoom in but thought it was a vortex. I was asking because I found an extra MK Manufacturing magnification throw lever for a Gen 1 PST with the rubber ring that I do t need.
I tried to zoom in but thought it was a vortex. I was asking because I found an extra MK Manufacturing magnification throw lever for a Gen 1 PST with the rubber ring that I do t need.
Ok, received the upper. Very nice too!
I've attached it to my ruger 556 lower.
The 5 round ACS magazine wont lock in place but the 25 round will.
A quality scope is in the future but for now it's a 3x9 tasco pop had when he passed.
Shot it today and the bolt wouldn't full cycle. FTE was a regular occurrence but managed to get the scope sighted ....I'm ashamed to say how many rounds for 50 yards.
Came home an cleaned the bolt group, will try again tomorrow, weather permitting.
I've attached it to my ruger 556 lower.
The 5 round ACS magazine wont lock in place but the 25 round will.
A quality scope is in the future but for now it's a 3x9 tasco pop had when he passed.
Shot it today and the bolt wouldn't full cycle. FTE was a regular occurrence but managed to get the scope sighted ....I'm ashamed to say how many rounds for 50 yards.
Came home an cleaned the bolt group, will try again tomorrow, weather permitting.
Are you running a standard buffer weight?
If it's under 20" I would guess it's a mid length I gas system. What bullet weight were you shooting? I have a 20" rifle length and have no problem cycling Hornady Black with a std buffer in a carbine tube. Kak makes an adjustable buffer kit that comes with tungsten steel and aluminum weights to tune.
If it's under 20" I would guess it's a mid length I gas system. What bullet weight were you shooting? I have a 20" rifle length and have no problem cycling Hornady Black with a std buffer in a carbine tube. Kak makes an adjustable buffer kit that comes with tungsten steel and aluminum weights to tune.
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I'm new to ARs but the make sense.
I've placed this PSA upper, 18 inch barrel on a Ruger 556 lower, it sports a 16 inch barrel.
I'll do some checking to discover which buffer I should get.
Thanks for the suggestion
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Another thing I've run across is the gas tube and bcg alignment causing cycling issues. If the gas tube is misaligned slightly where it overlaps the gas key it can cause the bcg to drag.
A way to test the friction is to pull the bcg back a few inches and tilt the upper with barrel down. The bcg should slide forward and into the barrel lugs at about a 45 deg angle. If it doesn't you can tweak the gas tube to center up in the reciever also check the diameter as I've seen some tubes that were the wrong size. Finally you can look at the gas block for leaks, you will see carbon buildup around the barrel. Here's a video I found on the tilt test.
A way to test the friction is to pull the bcg back a few inches and tilt the upper with barrel down. The bcg should slide forward and into the barrel lugs at about a 45 deg angle. If it doesn't you can tweak the gas tube to center up in the reciever also check the diameter as I've seen some tubes that were the wrong size. Finally you can look at the gas block for leaks, you will see carbon buildup around the barrel. Here's a video I found on the tilt test.
Thanks again however it's just occurred to me that there is a long hex key, about 8 inches. Perhaps this is for adjusting the gas block, its said to be adjustable on PSAs description. I'll look into this later.
Found the destructions for adjusting the gas block on PSAs site, ...I'm good to go!
FWIW, I'm now a 6.5x39fan!
FWIW, I'm now a 6.5x39fan!
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