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Posted: 4/23/2013 2:21:53 AM EDT
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As I was shooting through my first mag last outing, the trigger broke on my SLR-105A1R. After about 10 rounds, the trigger felt like it over-travelled. When I looked down to see what happened, the trigger was sitting in my gloved hand.
I loved the Arsenal single stage, but the trigger is a cast part. An imperfection in the process must have grown until failure. I guess that's what happens after 6000+ rounds! Good thing it failed at a non-critical time. I would suggest you guys keep an eye out for any problems on your triggers, and replace them if you have any doubts. I might just do it as a matter of course during regular intervals. I'll probably replace it with a G2, but I'd like to see if I can find an Arsenal single stage. I'm not too interested in a 2-stage at the moment. Anyway, gratuitous photos from the outing. The AR is chambered in 5.45. Mounted a Primary Arms 4-14x44 FFP scope to act as spotter to help my buddy with his Rem. 700PSS. 
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, but I'd like to see if I can find an Arsenal single stage. I'm not too interested in a 2-stage at the moment. Wow, never seen that before. Rifle may just be letting you know it does not like all that stuff on it.  I believe the trigger is the same between the Arsenal single and double stage triggers. Only the hammer has the double stage bump on it.
Edit: Does you A1 have accessory lugs on the gas block? |
happened to mine too actually Honestly i think a good bit of it can be attributed to those of us who have 105's shoot them..... Alot I don't have an exact round count but near as i can figure i had about 10k through mine when the trigger broke, only actual malfunction i ever had. edited round count went back and counted the empty tins |
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, but I'd like to see if I can find an Arsenal single stage. I'm not too interested in a 2-stage at the moment. Wow, never seen that before. Rifle may just be letting you know it does not like all that stuff on it. I believe the trigger is the same between the Arsenal single and double stage triggers. Only the hammer has the double stage bump on it.
Edit: Does you A1 have accessory lugs on the gas block? The Arsenal triggers are the same. As Ted pointed out, it's the hammer that creates the 2 stage effect. |
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, but I'd like to see if I can find an Arsenal single stage. I'm not too interested in a 2-stage at the moment. Wow, never seen that before. Rifle may just be letting you know it does not like all that stuff on it. I believe the trigger is the same between the Arsenal single and double stage triggers. Only the hammer has the double stage bump on it.
Edit: Does you A1 have accessory lugs on the gas block? I'm aware the triggers are the same. I was thinking about other 2 stage options, like RSA, Jard, and the Texas triggers. It seems the recent slr-101s and sam7s have pretty soft hammers, which makes me a bit hesitant when in conjunction with the cast trigger. I'll be getting a G2. No-ban slr-105s still had shaved accessory lugs, as far as I'm aware. There may have been a few that slipped through intact, but it's pretty rare. As far as the accessories, this rifle is my shoot-hard test bed. So far, everything I have on it adds rather than subtracts, except I'm still a little up in the air regarding the MFER magwell and the MFT grip. I have two other slr-105s I keep pretty and original. 
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Jeez, first time I've seen that. Almost all my AK's have the same trigger, makes me want to pick up some backups. You aren't getting over gassed with that 4pc booster on a full length barrel? I haven't noticed any problems. The recoil is about the same. I don't see any contact issues between the rear trunnion and the bolt carrier, and the gas tube isn't any dirtier. Lot's of positives though. All the gas is directed forward. This is especially helpful when shooting prone while in brush. Also, the noise is also sent downrange, making it more pleasant to shoot in tight spaces and with other people. I had a pretty terrible experience shooting prone in these bushes a while back. I was using a regular 74 brake, and the gasses were building up around me. I thought I was for sure getting cancer.
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G2 for the win. Also, tell me more about the magwell funnel - easy install? Very easy. I did it in about 15 minutes. Drops right in. It did slightly change the way I reload, and it can be picky with my Polish polymer mags in terms of quick mag changes. I think the Polish magazines have slightly different dimensions near the rear lug. Bulgarian and Russian surplus mags work best. It also forced me to make sure the front was angled in correctly, or the rear wouldn't seat. It's something that can be overcome with training. |
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, but I'd like to see if I can find an Arsenal single stage. I'm not too interested in a 2-stage at the moment. Wow, never seen that before. Rifle may just be letting you know it does not like all that stuff on it. I believe the trigger is the same between the Arsenal single and double stage triggers. Only the hammer has the double stage bump on it.
Edit: Does you A1 have accessory lugs on the gas block? I'm aware the triggers are the same. I was thinking about other 2 stage options, like RSA, Jard, and the Texas triggers. It seems the recent slr-101s and sam7s have pretty soft hammers, which makes me a bit hesitant when in conjunction with the cast trigger. I'll be getting a G2. No-ban slr-105s still had shaved accessory lugs, as far as I'm aware. There may have been a few that slipped through intact, but it's pretty rare. As far as the accessories, this rifle is my shoot-hard test bed. So far, everything I have on it adds rather than subtracts, except I'm still a little up in the air regarding the MFER magwell and the MFT grip. I have two other slr-105s I keep pretty and original. <a href="http://s1220.photobucket.com/user/sdrake100/media/CIMG2885.jpg.html" target="_blank">http://i1220.photobucket.com/albums/dd448/sdrake100/CIMG2885.jpg</a> Ever shoot the RPK74 for groups? Lately I've been day dreaming about building a DMR rifle of sorts with an RPK74 barrel and milled receiver. |
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Ever shoot the RPK74 for groups? Lately I've been day dreaming about building a DMR rifle of sorts with an RPK74 barrel and milled receiver. With iron sights, I was getting about an inch and a half at 100 yards. It just got back from getting a rail installed, so I'll have to see what it does with optics. I've been tossing the idea of building a dedicated 5.45 DMR rifle too. The RPK-74 is nice, but I think the concept can be streamlined. I'm sure the bipod doesn't help in terms of accuracy. I was thinking of using the AR platform for the DMR, but I'm not too impressed with my 5.45 AR, and I'm not a big fan of the platform. Magazines are the biggest issue with 5.45 AR's. However, it would be pretty simple to get an SPR contour 20" barrel |
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Ever shoot the RPK74 for groups? Lately I've been day dreaming about building a DMR rifle of sorts with an RPK74 barrel and milled receiver. With iron sights, I was getting about an inch and a half at 100 yards. It just got back from getting a rail installed, so I'll have to see what it does with optics. I've been tossing the idea of building a dedicated 5.45 DMR rifle too. The RPK-74 is nice, but I think the concept can be streamlined. I'm sure the bipod doesn't help in terms of accuracy. I was thinking of using the AR platform for the DMR, but I'm not too impressed with my 5.45 AR, and I'm not a big fan of the platform. Magazines are the biggest issue with 5.45 AR's. However, it would be pretty simple to get an SPR contour 20" barrel Nice. I was hoping 2moa or so would be do-able. I wouldn't use the barrel mounted bipod. I have some ideas bouncing around in my head about mounting one to the receiver, or a way to free float the handguard and mount it there. But the free float idea is probably beyond my fabrication abilities right now. |
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Ever shoot the RPK74 for groups? Lately I've been day dreaming about building a DMR rifle of sorts with an RPK74 barrel and milled receiver. With iron sights, I was getting about an inch and a half at 100 yards. It just got back from getting a rail installed, so I'll have to see what it does with optics. I've been tossing the idea of building a dedicated 5.45 DMR rifle too. The RPK-74 is nice, but I think the concept can be streamlined. I'm sure the bipod doesn't help in terms of accuracy. I was thinking of using the AR platform for the DMR, but I'm not too impressed with my 5.45 AR, and I'm not a big fan of the platform. Magazines are the biggest issue with 5.45 AR's. However, it would be pretty simple to get an SPR contour 20" barrel Nice. I was hoping 2moa or so would be do-able. I wouldn't use the barrel mounted bipod. I have some ideas bouncing around in my head about mounting one to the receiver, or a way to free float the handguard and mount it there. But the free float idea is probably beyond my fabrication abilities right now. I was *this* close to picking up the milled 5.45 RPK that K-Var had for sale a while back. It would have been interesting to compare with my RPK-74. Another good base might be a VEPR. Early on, they imported a few VEPRs in 5.45 with a 23 in. barrel. Hopefully they bring more of those in. |
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Hate to tell you this but since you keep saying that Arsenal triggers are cast and that you are getting a Tapco G2, what exactly do you think a G2 is? It is a cast metal part.
K-Var FCGs were made with MiM and I have heard of them breaking before. If you didn't need a US made part for 922(r) purposes you could put a nice milled foreign fire control group in the rifle and probably never need to replace it. I had a bunch of them new in package in my parts box as spares. Double hook and single hook sets. Do a polish job on them and they are better than any US group as far as durability. |
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Hate to tell you this but since you keep saying that Arsenal triggers are cast and that you are getting a Tapco G2, what exactly do you think a G2 is? It is a cast metal part. K-Var FCGs were made with MiM and I have heard of them breaking before. If you didn't need a US made part for 922(r) purposes you could put a nice milled foreign fire control group in the rifle and probably never need to replace it. I had a bunch of them new in package in my parts box as spares. Double hook and single hook sets. Do a polish job on them and they are better than any US group as far as durability. Thanks for clearing that up. I got the two processes mixed up. RSA claims they are the only 100% milled trigger, but the G2 should work fine. I'll test it out for another few thousand rounds and see how it's holding up. Also, it would help if you could point me in the direction of those foreign milled triggers you were talking about. |
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Also, it would help if you could point me in the direction of those foreign milled triggers you were talking about. Let me check my part box. Double hook or single hook? The double hook are new in package, the one I have opened trigger and hammer milled for sure. Single hook triggers are milled but some disconnectors appear to be cast from what I can see. You can install a double hook trigger in a rifle cut for single hook if you duplicate the second notch for the trigger. I did it on a Saiga I converted. If your rifle has plenty of 922(r) parts then it isn't an issue or you could see if just the trigger change out works with your US hammer and disconnector. I bought the double hook sets from Tapco years ago, they were advertised as Bulgarian. The single hook sets are from different countries and no longer in packaging. No idea which are which as I have had stamped sets from Poland, Hungary, Bulgaria and Romania and these sets are all loose. |
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Ever shoot the RPK74 for groups? Lately I've been day dreaming about building a DMR rifle of sorts with an RPK74 barrel and milled receiver. With iron sights, I was getting about an inch and a half at 100 yards. It just got back from getting a rail installed, so I'll have to see what it does with optics. I've been tossing the idea of building a dedicated 5.45 DMR rifle too. The RPK-74 is nice, but I think the concept can be streamlined. I'm sure the bipod doesn't help in terms of accuracy. I was thinking of using the AR platform for the DMR, but I'm not too impressed with my 5.45 AR, and I'm not a big fan of the platform. Magazines are the biggest issue with 5.45 AR's. However, it would be pretty simple to get an SPR contour 20" barrel Nice. I was hoping 2moa or so would be do-able. I wouldn't use the barrel mounted bipod. I have some ideas bouncing around in my head about mounting one to the receiver, or a way to free float the handguard and mount it there. But the free float idea is probably beyond my fabrication abilities right now. I was *this* close to picking up the milled 5.45 RPK that K-Var had for sale a while back. It would have been interesting to compare with my RPK-74. Another good base might be a VEPR. Early on, they imported a few VEPRs in 5.45 with a 23 in. barrel. Hopefully they bring more of those in. I had thought about the VEPR also. I've started getting together everything I need to build my own AKs, so I'm leaning towards building my own thing from the ground up. We'll see what happens. I have to build my krink first, so not in any rush. |
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Did you cut the trunnion tang off that 105? If so, that's just blasphemy. No, I didn't. The Rifle Dynamics adapter is high enough that the tang fits inside the buffer tube. Honestly, what's your problem? You don't contribute except for your critical (incorrect) comments. I thought you were the "AK guru"? Or is that only when you're inebriated? 
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Hmmm, this thread now has me paranoid, I may grab some Bulgy or Russian triggers just to be safe. The Bulgarian milled sets I bought years ago look just like the original cast metal Jerry Gordon G2 double hook fire control groups before Tapco made the improvements to them. I bought mine as spare parts about 13 years ago just in case. I have never had a Tapco G2, Gordon G2 or FSE fire control group break on me yet though and they are all cast metal. If they break I will replace the part that breaks with a foreign milled part. I like the idea of the double hook trigger in that if one hook breaks the rifle can still operate with the remaining hook. But the double hook milled triggers I have are simple enough to use in any receiver or the trigger can be modified to fit in a single hook receiver. 922(r) isn't an issue in most of my rifles as I replaced followers and baseplates on some mags years ago and almost all of my rifles have extra US parts, not that the ATF is snooping around in my gun safe and the local LEO's are ignorant even on their own state laws. Not all US fire control groups are marked US anyway. Early FSE fire control groups had no markings. |
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My SLR-105 had the original Arsenal FCG when it at the time I bought it. I was shooting it at a competition when a problem arose. We broke it down and discovered that the hammer was broken clean in half where the hook is (single-hook). It was then that I discovered this was a not unheard of occurrence with Arsenal FCG's and potentially other FCG's that are MIM instead of billeted steel. I put a Com-Bloc FCG in there and never looked back. When I got my SGL a few years ago I threw a Com-Bloc in it as well the very night I obtained it.
Personally, I wouldn't trust the Arsenal. That being said, one of my AK's has a G2 which is also MIM but the quality seems to be better. It's not my go-to, though. |
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Sorry to be off topic, and sorry about your trigger, but what stock adapter is that?
I ask because I cut the tang off of my AK for an ACE stock, so I am limited to options that can be held in place with a single screw, instead of both screws. That one looks like it might work. |
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Sorry to be off topic, and sorry about your trigger, but what stock adapter is that? I ask because I cut the tang off of my AK for an ACE stock, so I am limited to options that can be held in place with a single screw, instead of both screws. That one looks like it might work. It's a Rifle Dynamics AR stock adapter. The tang fits inside the AR buffer tube. You could probably make it work with one screw hole, but I'm not sure about long-term stability. Any chance you can just replace the rear trunnion? |
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Personally, I wouldn't trust the Arsenal. That being said, one of my AK's has a G2 which is also MIM but the quality seems to be better. It's not my go-to, though. Tapco G2's are cast metal as far as I know. Jerry Gordon G2's were cast. Molten metal forced into the mold casting die. More work finishing the parts removing excess flashing material at the seams. Arsenal fire control groups use MIM, powdered metal with binder injected into mold. Arsenal used to have a page explaining how they were the only ones using MIM in making the AK fire control groups and how great they were. But there have been posts here for several years about them breaking. I looked on Arsenal and K-var's site but no longer find the page saying how great the fire control group is. Maybe someone else can locate it. |
| It has probably already been said but some of the early triggers that went into the 105's have been reported to break every now and then. Supposedly this was corrected, and I have not seen this happen with their newer 2 stage ones. I prefer the G2 anyway and always replace the Arsenal one. |
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The Arsenal ones aren't hardened to the level that the G2's are. This was done on purpose so as not to wear your fitted bolt prematurely- course that is up for debate but that was the reason they told me. Although initial batches I don't believe were hardened at all in the early 105's. I smooth out my Arsenal two stage types by simply polishing down the "hook" on the trigger itself- so that it has a slight hesitation yet smooth as glass. Just use 600 grit paper, laying it flat on a table edge then running the trigger hook across until it's uniform. From the factory they are a horribly rough. I haven't broken any triggers yet and have some pretty high round count rifles. I do run G2's in just about everything else in the stable. Never any luck with the Red Star groups, some work with the stop rivet, but most don't. I believe they corrected this after 2010 but haven't used those in a while.
Drunken AK Guru.
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