Posted: 6/2/2017 8:56:26 AM EDT
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I'm looking at getting one of these to compliment a 6.8 SBR that also breaks down nicely and allows me to carry it around inconspicuously in places where people are active. Cruising around in a golf cart on the course or through a development with a black toolbox on the back shouldn't look out of the ordinary; just a guy going to fix something broken.
I checked one out yesterday and would like to hear some user input. Is the barrel nut removal and install really that simple - you don't need a vise - can get correct torque just supporting the rifle in your hands or by placing it on the ground etc? I noticed that the barrel had a little rotational play when inserted into the receiver ( just a tad ) - any affect on POI beyond your expectations? Can non tOBR barrels be installed - anyone cut down a tOBR rail - and if not, when is Mark coming out with the 12" 6.8'barrel and shorter hand guard? The gas block had a clamp in front of it that was loose - two holes lined up with two holes in the front of the gas block that housed the pins that the adjustment lever rested on - is this clamp supposed to be loose? ( not flopping in the wind loose, but you could rotate it left and right to where the rail would drag against it during rail removal ) Any of you break down your rifle often or even every time you shoot - any wear issues on the barrel nut or wrench? Suppressor experiences with the TranQuilo specifically in regards to gas port tuning - think I read it was originally tuned for a Surefire - was there a change made on newer production for the TranQuilo? Any other info you'd like to share I'd appreciate. |
You watched the assembly video in the sticky thread right? That's the official guide to assembly.
| I own a 16 inch tobr that wears a SDN-6 100% of the time. Absolutely love the set up. Complete breakdown of the rifle is super simple and quick. I'm not familiar with any type of barrel rotational play when inserted into the upper receiver. Doesn't sound right. Same goes for the loose gas block clamp. Like I said I run an AAC SDN-6 100% of the time on the suppressed setting, using whatever buffer and spring Larue shipped it with. Shoots lights out. 0 malfunctions. Do not notice any blow back. Pick one up from Larue, and you won't be disappointed. |
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s2s & smacha, thanks.
Got some trigger and disassembly time with the tOBR today. After watching the video I figured out the slight rotational issue with barrel in the receiver during my first experience. He had the upper off the lower and the BCG removed when I was inserting the barrel into the receiver. With the BCG in the upper, the barrel didn't move as before. The notch for the barrel extension pin is wider than the pin, so without the bolt mated to the barrel extension you can ever so slightly rock the barrel. Good to know. Got the barrel nut install down pat. The entire purpose of this rifle in my opinion, and why I'm interested in it, solely relies on the ability to quickly remove/install the barrel nut. I'll admit that I was a bit  over this due to my experiences building rifles in regards to the tools, vise and amount of torque I'm used to. Damn nice job Mark! I took the rifle fully apart, removed the optic and then reassembled it, shooting a string of 5 or so shots, and did this probably 10 times. My target was a 6" plate at 75 yards, the optic was a 6x Leupold in a LT lever mount and the ammo was Hornady Black 5.56 62 gr FMJ. I did not miss the target once; very convincing results. Sub MOA isn't a requirement for my intended application so I didn't bother shooting targets to see what it could do, but I could tell it would have been pretty good by the impact ring on the freshly painted steel.
The clip in front of the gas block seemed like it was installed correctly but I could turn it to where the ears were off the gas block and would rub on the hand guard during install. Are there supposed to be roll pins in those two holes up front that match the holes on the gas block or is that just how they drive the pins in for the gas block selector switch? I'll be picking one up most definitely. ETA: Current wait times? |
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Quoted:
s2s & smacha, thanks. Got some trigger and disassembly time with the tOBR today. After watching the video I figured out the slight rotational issue with barrel in the receiver during my first experience. He had the upper off the lower and the BCG removed when I was inserting the barrel into the receiver. With the BCG in the upper, the barrel didn't move as before. The notch for the barrel extension pin is wider than the pin, so without the bolt mated to the barrel extension you can ever so slightly rock the barrel. Good to know. Got the barrel nut install down pat. The entire purpose of this rifle in my opinion, and why I'm interested in it, solely relies on the ability to quickly remove/install the barrel nut. I'll admit that I was a bit over this due to my experiences building rifles in regards to the tools, vise and amount of torque I'm used to. Damn nice job Mark! I took the rifle fully apart, removed the optic and then reassembled it, shooting a string of 5 or so shots, and did this probably 10 times. My target was a 6" plate at 75 yards, the optic was a 6x Leupold in a LT lever mount and the ammo was Hornady Black 5.56 62 gr FMJ. I did not miss the target once; very convincing results. Sub MOA isn't a requirement for my intended application so I didn't bother shooting targets to see what it could do, but I could tell it would have been pretty good by the impact ring on the freshly painted steel.
The clip in front of the gas block seemed like it was installed correctly but I could turn it to where the ears were off the gas block and would rub on the hand guard during install. Are there supposed to be roll pins in those two holes up front that match the holes on the gas block or is that just how they drive the pins in for the gas block selector switch? I'll be picking one up most definitely. ETA: Current wait times? |
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Quoted:
s2s & smacha, thanks. Got some trigger and disassembly time with the tOBR today. After watching the video I figured out the slight rotational issue with barrel in the receiver during my first experience. He had the upper off the lower and the BCG removed when I was inserting the barrel into the receiver. With the BCG in the upper, the barrel didn't move as before. The notch for the barrel extension pin is wider than the pin, so without the bolt mated to the barrel extension you can ever so slightly rock the barrel. Good to know. Got the barrel nut install down pat. The entire purpose of this rifle in my opinion, and why I'm interested in it, solely relies on the ability to quickly remove/install the barrel nut. I'll admit that I was a bit over this due to my experiences building rifles in regards to the tools, vise and amount of torque I'm used to. Damn nice job Mark! I took the rifle fully apart, removed the optic and then reassembled it, shooting a string of 5 or so shots, and did this probably 10 times. My target was a 6" plate at 75 yards, the optic was a 6x Leupold in a LT lever mount and the ammo was Hornady Black 5.56 62 gr FMJ. I did not miss the target once; very convincing results. Sub MOA isn't a requirement for my intended application so I didn't bother shooting targets to see what it could do, but I could tell it would have been pretty good by the impact ring on the freshly painted steel.
The clip in front of the gas block seemed like it was installed correctly but I could turn it to where the ears were off the gas block and would rub on the hand guard during install. Are there supposed to be roll pins in those two holes up front that match the holes on the gas block or is that just how they drive the pins in for the gas block selector switch? I'll be picking one up most definitely. ETA: Current wait times? Attached File |
| The thin black piece in front of the gas block. It has two holes that match up to the two holes in the front of the gas block the te two pins are inserted into that are the stops for the selector lever. That black piece was loose and I could turn it right and left. Should there be pins trough those holes securing it to the has block? Take a pic from the muzzle looking back at the gas block. |
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Quoted:
The thin black piece in front of the gas block. It has two holes that match up to the two holes in the front of the gas block the te two pins are inserted into that are the stops for the selector lever. That black piece was loose and I could turn it right and left. Should there be pins trough those holes securing it to the has block? Take a pic from the muzzle looking back at the gas block. |
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18" 556 otbr here.
Had it about 2 1/2 yrs, it's been a great rifle. I do a full break down about every 500rds to do a deep clean and put it back together. Never needed to rezero. The gb selector works great for suppressors. I recently switched to a gen 3 prs stock, but haven't got to the range with it yet. |