MickB
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Posts posted by MickB
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On 1/20/2021 at 6:48 PM, JBP55 said:
I find it hard to believe their trigger will reduce the trigger pull weight almost 3# without some serious spring changes.
It indeed does, with a standard factory 5lb connector.
With a factory “-“ 3.5lb connector pull we measured pull weight at 2.25lb.
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On 1/20/2021 at 2:07 PM, 3gunDMD said:
Timney usually sponsors SMM3gun in March so I'm hoping they' ll have a demo unit to try at the match.
They are sponsoring SMM3G once again for 2021. I can ask them about having a demo unit on hand.
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On 1/21/2021 at 6:23 AM, rooster said:
If the sear keeps the firing pin cocked, I wonder if the other 2 safeties are compromised?
No, trigger safety and firing safety plunger both remain fully operational
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Like the title says, is the Coda Evolution handguard compatible with the QC10 side charging upper receiver or does the diameter block or hide too much of the side charging handle?
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TTI have just released their own magwell for the M&P which I presume will be compatible with their mag extensions.
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Look at their full selection and they have the same 4.25” model with 3 mags and night sites for $399.
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On 5/19/2020 at 5:20 PM, mveto said:
This. I took my SP01 bladetech holster and gently heated the bottom part and shoved the pistol with bull shadow upper in until it was properly seated and it was done.Works great!
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As an example the QC10 GSF is listed as prohibited in Canada. However there are the QC5 and CLT lowers that are not listed.
QC10 uppers are PCC specific and can be argued are not AR uppers....
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10lb Wollf variable rate recoil spring with 15lb or 17lb mainspring.
Mick
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Don’t eyeball your gas block installation.
Mic the distance from the barrel shoulder to the start of the gas port. Now mic the distance from the back of the gas block to the start of the gas hole. You will more than likely have a 0.02-0.03” difference.
Use a feeler guague up against the barrel shoulder to ensure correct offset.
Another trick is to cut the end of a toothpick and drop it into the gas block hole (make sure your gas metering screw is all the way out). Position the barrel with the gas port facing down then slip the gas block on upside down. Turn the assembly right side up and look down the bore. Wiggle the gas block around. When the holes are aligned the toothpick will drop from the gas block into the barrel. Tighten gas block. The toothpick piece should fall out of the barrel, if not use a rod to push it out. All done and gas block will be perfectly aligned.
Mick
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How are the gas port sizes on these?
Adjustable gas block needed?
Mick
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The sweat off Kurt Miller’s brow!
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Mick
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Fiocchi will be selling buckshot and slugs at their booth in the Vendor Building on the Range.
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Low Pro hand stop is the smallest I have seen and are perfect for short barrel applications
https://www.lowprollc.com/product/
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I load to 1.15" and have no issues...
Mick
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Just use Independence 5.56...
Mick
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4 hours ago, iukamedic said:
I do understand these things but I have built a few upper lower combos and this is the worst fit out of the box. You have to be careful with that tension screw it can lead to problems with the gun operation. Have seen it happen. im gonna put it together but its a shame the money that will end up being invested in this gun and it will most likely be a rattle bag without adding gizmos or oversized pins. Thats all I was trying to point out.
Contact QC10 and see if they will help by swapping the set. The QC10 lowers I have are all tight with their uppers.
Mick
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1 hour ago, HMFIC03 said:
Anyone try a ballistic advantage barrel yet? Great price https://thebuffalo.us/shop/9mm-5-5″-ar15-modern-series-barrel/
I have not been able to find if longer OAL 1.115+ will function.
I load to 1.15" with 124gr Precision Delta fmj with no issues in a Ballistic Advantage barrel.
Mick
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1 hour ago, iukamedic said:
Just putting this out there for those who are building. Quarter circle ten upper lower fitment is not that good. Havent started building it yet and cant sell it for what the thing cost ($430 plus ffl fee). I was pretty disappointed with the fit of the "matched set" for that kind of money.
You do know there is a tension screw in the QC10 lower to tighten the upper to lower fit, right?
Also, as in any upper/lower set, fit can also be influenced by the front pivot pin.
Mick
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Superstition Mountain Mystery 3 Gun 2018 at Rio Salado Sportsman's Club, Mesa AZ
March 23-25, 2018
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The QC10 lowers have a tension screw built in to take out any slop from the upper. With that said, my QC10 upper fit my QC10 lower so well that I had no need to use the tension screw.
Mick
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Can you show the internals? Are the pistons available from commercial sources?
Mick
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2 hours ago, Aircooled6racer said:
Hello: I have found that some uppers have the bolt bore in a different place than others. If the upper rides the bolt higher, then you may have some trigger reset problems. The lowers that I have seen have been pretty good on specs. The only way is to actually try it. Most problems that I have seen are with the bolt and the buffer setups. Thanks, Eric
That is pretty sad if true. The Colt 9mm AR was designed around a regular mil-spec upper, so if an upper receiver maker can't get something as basic as the bolt bore correct then they have quality issues.
Mick
First AK47?
in Rifle - Technical
Posted · Edited by MickB
With the current prices on AK imports, best value and quality is the Zastava ZPAP M70.
If you are going to spend $1,700 on a Bulgarian milled receiver AK, may as well look at the Galil ACE in 7.62x39 as well.