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Posted: 7/21/2014 9:28:48 PM EDT
[#1]
Quote HistoryQuoted:
I have a Sentry series 7 on my 308 build. I have an 18" barrel with a heavy buffer unsuppressed. Any idea where I should "start" the gas block at? I currently have it backed off 3 clicks from closed and I was going to go from there. Start 6 or 7 out Run it full open to make sure the rifle functions properly to start with After you break it in you can start closing the gas port. |
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Posted: 7/21/2014 10:31:10 PM EDT
[#2]
Ok thanks
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Posted: 7/22/2014 1:07:40 PM EDT
[#3]
got my shipping notice yesterday..
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Posted: 7/28/2014 9:54:55 AM EDT
[#4]
Nevermind, found the pic on page 4 of this thread. Thought I had read that page before.
Have there been any pics or graphics of the tool-less? I have an upper built that is waiting on a gas block and my suppressor, so I have time. Just wondering if I should wait for the tool-less or pic up a regular one now? How does the tool-less adjustment work? |
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Posted: 8/4/2014 6:16:20 PM EDT
[#5]
I just received my Sentry railed gas block. The instructions say to use 9 in lbs of torque on the 6-32 clamping screws. This will generate about 250 lbs tension in the screws.
This does not seem like enough to anchor an external, railed gas block against impacts, say against a mounted front sight. Some engineering calculations ( using what I consider to be optimistic assumptions) estimate that 20 ft lbs of torque applied to the body of the block will rotate one of the clamps on the barrel, at 9 in lb of fastener torque. Of course, this is only my theoretical estimate. Have you done tests of the gas block clamping power, like Vltor did? Of course this is a better way to address the issue than any theoretical calculations. Edit: clarity, and change screws to 6-32. |
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Posted: 8/4/2014 6:32:23 PM EDT
[#6]
Quote HistoryQuoted:
I just received my Sentry railed gas block. The instructions say to use 9 in lbs of torque on the 6-48 clamping screws. This will generate about 250 lbs tension in the screws. This does not seem like enough to anchor an external, railed gas block against impacts, say against a mounted front sight. Some engineering calculations ( using what I consider to be optimistic assumptions) estimate that 20 ft lbs of torque applied to the body of the block will rotate one of the clamps on the barrel. Of course, this is only my theoretical estimate. Have you done tests of the gas block clamping power, like Vltor did? Of course this is a better way to address the issue than any theoretical calculations. Tighten as much as you want. People break bolts over tightening clamp on blocks. That number has served us well. They are 6-32 bolts btw. Thanks Todd |
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Posted: 8/4/2014 10:27:57 PM EDT
[#7]
just ordered my SSA7-CN :)
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Posted: 8/5/2014 8:07:39 AM EDT
[#8]
Very nice blocks indeed.
What are the little side plates for or covering? |
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Posted: 8/5/2014 9:06:40 AM EDT
[#9]
Thanks for the help Todd, I was able to get this thing running like a rapped ape!
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Posted: 8/5/2014 11:36:45 AM EDT
[#10]
Scar:
What barrel are you using - looks like carbon & steel? |
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Posted: 8/5/2014 11:50:10 AM EDT
[#11]
Quote HistoryQuoted:
Scar: What barrel are you using - looks like carbon & steel? It is a carbon wrapped 11.5" 300 blk Christensen Arms barrel. It weights 19.6 oz with the muzzle device. |
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Posted: 8/5/2014 11:54:57 AM EDT
[#12]
Thanks - I'll look into then - I assume they have 223?
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Posted: 8/5/2014 11:57:00 AM EDT
[#13]
Quote HistoryQuoted:
Thanks - I'll look into then - I assume they have 223? Yeah they do and I think you can purchase those right off their website. I called in for this one back in April when they were not offering barrels loose yet, but they made one for me anyway. Talk to Jeremy if you call in. |
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Posted: 8/5/2014 12:03:52 PM EDT
[#14]
The have them!
CA-15 .223 WYLDE 16? 1/9 $499.00 |
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Posted: 8/5/2014 12:18:22 PM EDT
[#15]
Quote HistoryQuoted:
The have them! CA-15 .223 WYLDE 16? 1/9 $499.00 Good deal! Just a heads up mine took 2 months to make. 
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Posted: 8/7/2014 6:00:56 PM EDT
[#16]
Anyone know what rail height over bore is on the Colt 901?
I'm trying to figure out if I can use the low railed block with a standard AR15 flip front and be at the correct height for the Troy (yuk!, not their quality but their ethics) micro that comes on the Colt. If that isn't going to work, will the tall railed block line up with the top rail on the Colt? |
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Posted: 8/8/2014 11:32:05 PM EDT
[#17]
So...
I received a shipment notice on the 5th, and the tracking number notes it was shipped on the 5th, but so far the only update via USPS is "Pre-Shipment"... Does that mean its been shipped? lol edit: nevermind, tracking updated |
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Posted: 8/11/2014 7:52:56 PM EDT
[#18]
Is there a planned release date for the Railed blocks in .625?
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Posted: 8/21/2014 11:36:32 AM EDT
[#19]
Stainless Sentry 7's now available in Melonite QPQ finish.
ALL Sentry Adj screw now feature M/QPQ finish as well. Going up on the site now. 
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Posted: 8/21/2014 12:42:32 PM EDT
[#20]
Are you guys going to have a Labor Day sale?
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Posted: 8/21/2014 12:50:12 PM EDT
[#21]
Quote HistoryQuoted:
Are you guys going to have a Labor Day sale? Of course.
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Posted: 8/22/2014 2:50:48 AM EDT
[#22]
So what's generally a stronger metal? 316 or 4140?
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Posted: 8/22/2014 10:03:08 AM EDT
[#23]
Quote HistoryQuoted:
So what's generally a stronger metal? 316 or 4140? 316 in this app It's splitting hairs though really. |
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Posted: 8/23/2014 4:54:25 PM EDT
[#24]
Quote HistoryQuoted:
Very nice blocks indeed. What are the little side plates for or covering? Probably answered earlier in the thread but from looking at the pics:
I'm guessing that plate applies tension against the set screw to both keep the screw from turning on it's own and to give tactile feedback for adjustments. (I.E. clicks when you turn the set screw) |
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Posted: 8/23/2014 7:13:25 PM EDT
[#25]
Yes the leaf spring applies pressure to a plunger underneath which in turn detents into the adjustment screw .
The screw and plunger are both Swiss turned Melonite finish 4140 steel |
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Posted: 8/25/2014 3:52:46 PM EDT
[#26]
Quote HistoryQuoted:
Yes the leaf spring applies pressure to a plunger underneath which in turn detents into the adjustment screw . The screw and plunger are both Swiss turned Melonite finish 4140 steel Since you are QPQ'ing the body, why not make it 4140? From what I have read in the 20 or so years I have been reading about it, QPQ'ed carbon steel turns out harder and more rust resistant than QPQ'ed stainless. It doesn't seem like stainless gives any benefit as a substrate over carbon steel, and it is harder to work and more expensive. |
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Posted: 8/25/2014 5:07:45 PM EDT
[#27]
Quote HistoryQuoted:
Since you are QPQ'ing the body, why not make it 4140? From what I have read in the 20 or so years I have been reading about it, QPQ'ed carbon steel turns out harder and more rust resistant than QPQ'ed stainless. It doesn't seem like stainless gives any benefit as a substrate over carbon steel, and it is harder to work and more expensive. Quote HistoryQuoted:
Quoted:
Yes the leaf spring applies pressure to a plunger underneath which in turn detents into the adjustment screw . The screw and plunger are both Swiss turned Melonite finish 4140 steel Since you are QPQ'ing the body, why not make it 4140? From what I have read in the 20 or so years I have been reading about it, QPQ'ed carbon steel turns out harder and more rust resistant than QPQ'ed stainless. It doesn't seem like stainless gives any benefit as a substrate over carbon steel, and it is harder to work and more expensive. The steel ones are at Melonite now We should have them back for Labor Day |
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Posted: 8/25/2014 5:08:33 PM EDT
[#28]
Half the folks want SS like half want clamp on.
We try to provide what our customers want. Todd |
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Posted: 8/25/2014 6:53:25 PM EDT
[#29]
What's the diff between the Nitride and the QPQ?
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Posted: 8/26/2014 12:11:43 PM EDT
[#30]
Quote HistoryQuoted:
What's the diff between the Nitride and the QPQ? Nitride is a generic term. QPQ is a specific process, salt bath quench, polish and a subsequent quench. BTW, Melonite is a trade name for nitriding using the salt bath process (SBN, or Salt Bath Nitriding), as is Tennifer, which I believe is a European trademark. |
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Posted: 8/26/2014 6:05:50 PM EDT
[#31]
Quote HistoryQuoted:
Nitride is a generic term. QPQ is a specific process, salt bath quench, polish and a subsequent quench. BTW, Melonite is a trade name for nitriding using the salt bath process (SBN, or Salt Bath Nitriding), as is Tennifer, which I believe is a European trademark. Quote HistoryQuoted:
Quoted:
What's the diff between the Nitride and the QPQ? Nitride is a generic term. QPQ is a specific process, salt bath quench, polish and a subsequent quench. BTW, Melonite is a trade name for nitriding using the salt bath process (SBN, or Salt Bath Nitriding), as is Tennifer, which I believe is a European trademark. Well, I'm even more confused now. |
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Posted: 8/26/2014 7:31:13 PM EDT
[#32]
Quote HistoryQuoted:
Well, I'm even more confused now. Quote HistoryQuoted:
Quoted:
Quoted:
What's the diff between the Nitride and the QPQ? Nitride is a generic term. QPQ is a specific process, salt bath quench, polish and a subsequent quench. BTW, Melonite is a trade name for nitriding using the salt bath process (SBN, or Salt Bath Nitriding), as is Tennifer, which I believe is a European trademark. Well, I'm even more confused now. I'll try again. Nitride is the generic term, and usually refers to Salt Bath Nitriding. Nitriding is essentially a fusing of nitride to any free iron that may allow oxygen to otherwise chemically bind to it (rust). That is why it is so rust resistant. It is typically only the Quench step (submersion into the tank of molten cyanide salts). A common name for this process in America is Melonite (a registered trademark by the Kolene Corp). In Europe, that single quench process is called Tennifer. QPQ is a three step process. A Quench, followed by some sort of surface Polishing, followed by another Quench. I hope that is a bit clearer. |
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Posted: 8/26/2014 8:08:15 PM EDT
[#33]
Thank God for you smart Fellas.
I just ask for the best overall processes I can get. The place who did our nitride uses no salt. The place that does QPQ for us is top notch with excellent T/E for our product samples to get us the most durable and wear resistant finishes possible for our material spec. Both finishes are damn good. More options..... Todd |
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Posted: 8/26/2014 9:27:52 PM EDT
[#34]
Quote HistoryQuoted:
Thank God for you smart Fellas. I just ask for the best overall processes I can get. The place who did our nitride uses no salt. The place that does QPQ for us is top notch with excellent T/E for our product samples to get us the most durable and wear resistant finishes possible for our material spec. Both finishes are damn good. More options..... Todd Thank you Todd. |
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Posted: 8/27/2014 10:59:13 PM EDT
[#35]
Quote HistoryQuoted:
Yes the leaf spring applies pressure to a plunger underneath which in turn detents into the adjustment screw . The screw and plunger are both Swiss turned Melonite finish 4140 steel I've got 2 sentries from before you started offering them in melonite, are my screw and plunger melonited or is that only for the blocks that were finished that way? would it even matter for gas erosion resistance? |
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Posted: 8/29/2014 11:33:58 PM EDT
[#36]
The coupon code is now on their website.
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Posted: 8/30/2014 12:30:02 AM EDT
[#37]
Quote HistoryQuoted:
The coupon code is now on their website. Coupon code isn't working :/. I want to buy a Sentry 7 soon! Also SLR, can you guys start accepting Bitcoin? 
No 3% fee Can be immediately transferred to USD on your end Quick and easy setup |
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Posted: 8/30/2014 3:56:22 PM EDT
[#38]
Should be working.
If you have coupon problems call 8557577435 ext 2. Alfredo can help you out. He's locked in the basement finishing models for the new 7.62 HG versions coming out. I'm sure he'd like to chat and get a break. |
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Posted: 8/30/2014 4:29:22 PM EDT
[#39]
From our FB-
The Taccom UL15 Recoil buffer is a great compliment to the Sentry gas blocks. At just .05oz(!) you must use adjustable gas with this buffer system. Back to back with a stock AR, the difference with the UL is incredible ! All my rifles that are not F/A are getting these. I was able to turn the gas down about 60% when I installed the UL15. Priced at around $25-30 its a great way to go considering the cost of a lightened carrier. We should have them up on the site next week. Todd@SLR I really wish I had these 2 years ago! Once you try em you'll never go back. 
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Posted: 8/30/2014 5:45:35 PM EDT
[#40]
Worked just fine for me. Make sure you use upper case on the letters.
Quote HistoryQuoted:
Coupon code isn't working :/. I want to buy a Sentry 7 soon! Also SLR, can you guys start accepting Bitcoin? http://www.talkradionews.com/wp-content/uploads/2013/11/bitcoin-logo.png No 3% fee Can be immediately transferred to USD on your end Quick and easy setup Quote HistoryQuoted:
Quoted:
The coupon code is now on their website. Coupon code isn't working :/. I want to buy a Sentry 7 soon! Also SLR, can you guys start accepting Bitcoin? http://www.talkradionews.com/wp-content/uploads/2013/11/bitcoin-logo.png No 3% fee Can be immediately transferred to USD on your end Quick and easy setup |
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Posted: 8/30/2014 8:53:05 PM EDT
[#41]
Quote HistoryQuoted:
From our FB- The Taccom UL15 Recoil buffer is a great compliment to the Sentry gas blocks. At just .05oz(!) you must use adjustable gas with this buffer system. Back to back with a stock AR, the difference with the UL is incredible ! All my rifles that are not F/A are getting these. I was able to turn the gas down about 60% when I installed the UL15. Priced at around $25-30 its a great way to go considering the cost of a lightened carrier. We should have them up on the site next week. Todd@SLR I really wish I had these 2 years ago! Once you try em you'll never go back. http://www.ar15.com/media/viewFile.html?i=68128 Interesting, very interesting. |
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Posted: 8/31/2014 2:08:45 AM EDT
[#42]
Quote HistoryQuoted:
From our FB- The Taccom UL15 Recoil buffer is a great compliment to the Sentry gas blocks. At just .05oz(!) you must use adjustable gas with this buffer system. Back to back with a stock AR, the difference with the UL is incredible ! All my rifles that are not F/A are getting these. I was able to turn the gas down about 60% when I installed the UL15. Priced at around $25-30 its a great way to go considering the cost of a lightened carrier. We should have them up on the site next week. Todd@SLR I really wish I had these 2 years ago! Once you try em you'll never go back. http://www.ar15.com/media/viewFile.html?i=68128 .05oz? 1.51 grams? |
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Posted: 8/31/2014 2:08:45 AM EDT
[#43]
Quote HistoryQuoted:
From our FB- The Taccom UL15 Recoil buffer is a great compliment to the Sentry gas blocks. At just .05oz(!) you must use adjustable gas with this buffer system. Back to back with a stock AR, the difference with the UL is incredible ! All my rifles that are not F/A are getting these. I was able to turn the gas down about 60% when I installed the UL15. Priced at around $25-30 its a great way to go considering the cost of a lightened carrier. We should have them up on the site next week. Todd@SLR I really wish I had these 2 years ago! Once you try em you'll never go back. http://www.ar15.com/media/viewFile.html?i=68128 .05oz? 1.51 grams? ETA: Just bought the Sentry 7 Clamp QPQ. Proud original owner of the DA7 NiB Clamp :D |
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Posted: 8/31/2014 11:02:19 AM EDT
[#44]
Quote HistoryQuoted:
.05oz? 1.51 grams? Quote HistoryQuoted:
Quoted:
From our FB- The Taccom UL15 Recoil buffer is a great compliment to the Sentry gas blocks. At just .05oz(!) you must use adjustable gas with this buffer system. Back to back with a stock AR, the difference with the UL is incredible ! All my rifles that are not F/A are getting these. I was able to turn the gas down about 60% when I installed the UL15. Priced at around $25-30 its a great way to go considering the cost of a lightened carrier. We should have them up on the site next week. Todd@SLR I really wish I had these 2 years ago! Once you try em you'll never go back. http://www.ar15.com/media/viewFile.html?i=68128 .05oz? 1.51 grams? Yes .5oz. |
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Posted: 8/31/2014 11:48:04 AM EDT
[#45]
For those using SLR's fine adj GB, you don't need a special buffer. You can use what you have right now; shut down the gas (for safety reason), remove or replace buffer weights (use delrin or aluminum spacers etc) and start increasing the gas settings during testing until bolt holds back consistently. Profit.
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Posted: 9/1/2014 2:46:42 AM EDT
[#46]
I believe that short buffer allow the gas key to smack the lower receiver ring on the recoil stroke. That is unless you add a spacer in the receiver extension.
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Posted: 9/1/2014 8:29:00 AM EDT
[#47]
Quote HistoryQuoted:
I believe that short buffer allow the gas key to smack the lower receiver ring on the recoil stroke. That is unless you add a spacer in the receiver extension. Not a short buffer It's 2 parts- one on each end of spring |
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Posted: 9/1/2014 9:46:03 PM EDT
[#48]
Quote HistoryQuoted:
Not a short buffer It's 2 parts- one on each end of spring Quote HistoryQuoted:
Quoted:
I believe that short buffer allow the gas key to smack the lower receiver ring on the recoil stroke. That is unless you add a spacer in the receiver extension. Not a short buffer It's 2 parts- one on each end of spring Ahhhh! I see it now. My apologies. Thank you for the clarification. :) |
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Posted: 9/1/2014 10:51:55 PM EDT
[#49]
Quote HistoryQuoted:
Not a short buffer It's 2 parts- one on each end of spring Quote HistoryQuoted:
Quoted:
I believe that short buffer allow the gas key to smack the lower receiver ring on the recoil stroke. That is unless you add a spacer in the receiver extension. Not a short buffer It's 2 parts- one on each end of spring Usable with a rifle length recoil system? I'm running an A1 Stock. |
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Posted: 9/5/2014 1:02:33 PM EDT
[#50]
Just got my SA7-SS-SM... wow this is lighter than my previous gen .625". Is the new version Sentry 6 lighter than the previous DA6 version? If so by how much? Also is the Sentry 6 set screw available in phosphated finish?
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