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How would I check that nut? I’m not familiar with these ar15 barrel setups nor have I taken this gun apart yet.
The upper reciever moves with the barrel, it seems the handguard is loose.. although the screws are tight. Does anybody else’s rifle do this?
Is there supposed to be a set screw on the bottom of the gas block? Mine does not have one and when I removed the hand guard I noticed the gas block is a little loose on the barrel.
Hmmm from what i'm reading, it sounds like its just the wobble between the upper and lower receiver. Mine was like that out of the box.Originally Posted by flyinlead
Yes, mine has a small screw on the bottom of the gas block and the block it tight.
The set screw has been previously mentioned to be only necessary for simplifying installation of the cross pin holding the gas block on.
No, because when the upper is removed from the lower the play is there.. its between the handguard and the upper/ barrel. Probably impossible to avoid since the handguard screws are only at one end so there is a lever effect on the handguard. However, its probably a non- issue. It just bugs me that the gas block may not be free floated if it jumps when fired. I am just wondering if other rifles have it or just mine.
I may dremmel out some material inside the handguard to give the gas block more clearance. First I need to shoot some more though.. maybe just need to find the right load and then I will be fine. Seems it shoots almost anything around 2- 2.5 moa. I did get two groups with one certain load right around 1 moa. Could have just been luck because they were only 3 shot groups... more testing.
[QUOTE=. maybe just need to find the right load and then I will be fine. Seems it shoots almost anything around 2- 2.5 moa. I did get two groups with one certain load right around 1 moa. Could have just been luck because they were only 3 shot groups... more testing.[/QUOTE]
Some results from last week using DA 4064 and 62g hornady FMJ increasing powder weight for 23 to 25 grains. Last result is surprising with the largest SD but smallest group:
Created: 10-19-2018 01:48:57 PM
Description: wk 4064 23 62
Distance to Chrono (FT): 10.00
Bullet Weight (gr): 62.000
Temp: 60 °F
BP: 30.16
Shots
# FPS
5 2373
4 2397
3 2363
2 ERROR 3
1 2365
Average: 2374.50
StdDev: 15.61
Min: 2363
Max: 2397
Spread: 34
True MV: 2374.50
Shots/sec: 0.31
Group Size (IN): 2.5
Created: 10-19-2018 01:40:07 PM
Description: wk 4064 24 62
Distance to Chrono (FT): 10.00
Bullet Weight (gr): 62.000
Temp: 53 °F
BP: 30.16 inHG
Shots
# FPS
5 2376
4 2401
3 2386
2 2420
1 2366
Average: 2389.80
StdDev: 21.26
Min: 2366
Max: 2420
Spread: 54
True MV: 2389.80
Shots/sec: 0.26
Group Size (IN): 2.75
Created: 10-19-2018 02:01:16 PM
Description: wk 4064 25 62
Distance to Chrono (FT): 10.00
Bullet Weight (gr): 62.000
Temp: 60 °F
BP: 30.16 inHG
Shots
# FPS
5 2486
4 2509
3 2549
2 2478
1 2454
Average: 2495.20
StdDev: 35.93
Min: 2454
Max: 2549
Spread: 95
True MV: 2495.20
Shots/sec: 0.32
Group Size (IN): 1.2
Did you guys hire hulk to put the barrel nut in?
it's so tight
I think you are right. That’s the big nut that has the holes that the handguard bolts to right? Mine was very loose and tightening it solved my problem
Yes - here's the manual
https://www.wolverinesupplies.com/Re...180CONLINE.pdf
It does not list the spec for the torque on the barrel nut so not sure what Kodiak recommends. AR (15's) are normally 30 ft-lb then index to the next notch (in this case next set of holes that line up with the handguard).
"No matter where you go - there you are"
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