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Posted: 1/21/2015 2:10:18 PM EDT
[#1]
Quote HistoryQuoted:
Yes, it is the extra power AR-10/DPMS 308 spring. It can be used in both the Armalite 308 carbine (uses a standard length buffer) or a DPMS pattern 308 carbine (uses a shortened buffer). It's pretty stiff. If I wanted it to be a little stronger I could put a hollow insert in my receiver extension that would compress the spring about 1" more. Quote HistoryQuoted:
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I tried my Sprinco orange spring yesterday. This is 20rds. If I did my math right it's right around 1000rpm.  http://youtu.be/VX8hSupbHcM
Good to know....I'm skimming the sight. Is the orange spring for AR-10s? It's pretty stiff. If I wanted it to be a little stronger I could put a hollow insert in my receiver extension that would compress the spring about 1" more. Does it work in your AR-15? I'm confused... |
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Posted: 1/21/2015 2:20:20 PM EDT
[#2]
Quote HistoryQuoted: Does it work in your AR-15? I'm confused... Quote HistoryQuoted: Quoted: Quoted: Quoted: I tried my Sprinco orange spring yesterday. This is 20rds. If I did my math right it's right around 1000rpm. http://youtu.be/VX8hSupbHcMGood to know....I'm skimming the sight. Is the orange spring for AR-10s? It's pretty stiff. If I wanted it to be a little stronger I could put a hollow insert in my receiver extension that would compress the spring about 1" more. Does it work in your AR-15? I'm confused... |
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Posted: 1/21/2015 2:25:06 PM EDT
[#3]
Quote HistoryQuoted:
Yes. I'm using a spring originally designed to work in both of the common .308 AR platforms and put it in my 5.56 AR. It was the strongest spring I could find that fits in a standard diameter buffer tube. Quote HistoryQuoted:
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I tried my Sprinco orange spring yesterday. This is 20rds. If I did my math right it's right around 1000rpm. http://youtu.be/VX8hSupbHcM
Good to know....I'm skimming the sight. Is the orange spring for AR-10s? It's pretty stiff. If I wanted it to be a little stronger I could put a hollow insert in my receiver extension that would compress the spring about 1" more. Does it work in your AR-15? I'm confused... Cool. I would have looked it up, but I am not supposed to be surfing the net. 
I always assumed they had a different diameter. |
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Posted: 1/21/2015 2:30:53 PM EDT
[#4]
Quote HistoryQuoted:
Does it work in your AR-15? I'm confused... Quote HistoryQuoted:
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I tried my Sprinco orange spring yesterday. This is 20rds. If I did my math right it's right around 1000rpm. http://youtu.be/VX8hSupbHcM
Good to know....I'm skimming the sight. Is the orange spring for AR-10s? It's pretty stiff. If I wanted it to be a little stronger I could put a hollow insert in my receiver extension that would compress the spring about 1" more. Does it work in your AR-15? I'm confused... I think the DPMS pattern 308 springs fit in 5.56 extensions, is what hes saying. The reason I think this is because DPMS' new 308's take standard AR-15 stocks. |
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Posted: 1/21/2015 2:31:10 PM EDT
[#5]
Quote HistoryQuoted: Cool. I would have looked it up, but I am not supposed to be surfing the net. I always assumed they had a different diameter. Quote HistoryQuoted: Quoted: SNIP Cool. I would have looked it up, but I am not supposed to be surfing the net. I always assumed they had a different diameter. |
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Posted: 1/21/2015 11:08:14 PM EDT
[#6]
Quote HistoryQuoted:
Nope, AR-10 bolts are smaller at the rear so they fit in a standard receiver extension. DPMS pattern guns use a standard length receiver extension with a shortened buffer. Armalite pattern guns use a longer receiver extension equal in length to the VLTOR A5 and utilize a standard carbine length buffer. Quote HistoryQuoted:
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SNIP Cool. I would have looked it up, but I am not supposed to be surfing the net.
I always assumed they had a different diameter. I have very little experience with AR10s. In fact, I have never owned a rifle in .308. The more I think about that, the more weird it seems. |
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Posted: 1/21/2015 11:42:33 PM EDT
[#7]
Quote HistoryQuoted: I have very little experience with AR10s. In fact, I have never owned a rifle in .308. The more I think about that, the more weird it seems. Quote HistoryQuoted: Quoted: SNIP I have very little experience with AR10s. In fact, I have never owned a rifle in .308. The more I think about that, the more weird it seems.  |
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Posted: 1/29/2015 2:54:39 AM EDT
[#8]
here is another little clip. testing the new finger stop. its just a pmag dust cover with the tabs grinded off
https://www.youtube.com/watch?v=mk6kDKXAbOI |
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Posted: 1/29/2015 4:03:31 AM EDT
[#9]
Quote HistoryQuoted:
here is another little clip. testing the new finger stop. its just a pmag dust cover with the tabs grinded off https://www.youtube.com/watch?v=mk6kDKXAbOI 
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Posted: 1/29/2015 9:33:38 AM EDT
[#10]
Quote HistoryQuoted:
here is another little clip. testing the new finger stop. its just a pmag dust cover with the tabs grinded off https://www.youtube.com/watch?v=mk6kDKXAbOI Mind posting some pics of it? Did you build your like jaqufrost? |
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Posted: 1/29/2015 12:54:39 PM EDT
[#11]
Quote HistoryQuoted:
Mind posting some pics of it? Did you build your like jaqufrost? Quote HistoryQuoted:
Quoted: here is another little clip. testing the new finger stop. its just a pmag dust cover with the tabs grinded off
https://www.youtube.com/watch?v=mk6kDKXAbOI Mind posting some pics of it? Did you build your like jaqufrost? Yes, he built it. Looks like he used a Magpul stock. |
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Posted: 1/29/2015 1:53:54 PM EDT
[#12]
Quote HistoryQuoted:
Yes, he built it. Looks like he used a Magpul stock. Quote HistoryQuoted:
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Quoted: here is another little clip. testing the new finger stop. its just a pmag dust cover with the tabs grinded off
https://www.youtube.com/watch?v=mk6kDKXAbOI Mind posting some pics of it? Did you build your like jaqufrost? Yes, he built it. Looks like he used a Magpul stock. Right. I meant following the same procedure or if he had made it differently. |
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Posted: 1/29/2015 3:53:21 PM EDT
[#13]
Thinking about ordering one of these new Hiperfire triggers to wrap up my bumpfire build. I really just want rid of the mil--spec that's in there. I was going to go with a CMC that I have but I like the gun that its in more and more.
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Posted: 1/29/2015 4:00:04 PM EDT
[#14]
Quote HistoryQuoted: Thinking about ordering one of these new Hiperfire triggers to wrap up my bumpfire build. I really just want rid of the mil--spec that's in there. I was going to go with a CMC that I have but I like the gun that its in more and more. |
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Posted: 1/29/2015 4:05:40 PM EDT
[#15]
Quote HistoryQuoted:
My only caution is that the EDT should have a pretty quick lock time due to its design and may not be ideal for a bump gun. The trigger feels pretty decent though, I should put mine in my bumpgun and try it sometime. Quote HistoryQuoted:
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Thinking about ordering one of these new Hiperfire triggers to wrap up my bumpfire build. I really just want rid of the mil--spec that's in there. I was going to go with a CMC that I have but I like the gun that its in more and more. Dude I would be mucho grateful if you did. I won't be able to run mine for another month or so, so I'm really just getting anxious more than anything. |
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Posted: 1/29/2015 4:10:17 PM EDT
[#16]
Quote HistoryQuoted: Dude I would be mucho grateful if you did. I won't be able to run mine for another month or so, so I'm really just getting anxious more than anything. Quote HistoryQuoted: Quoted: Quoted: Thinking about ordering one of these new Hiperfire triggers to wrap up my bumpfire build. I really just want rid of the mil--spec that's in there. I was going to go with a CMC that I have but I like the gun that its in more and more. Dude I would be mucho grateful if you did. I won't be able to run mine for another month or so, so I'm really just getting anxious more than anything. |
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Posted: 1/29/2015 8:14:03 PM EDT
[#17]
Quote HistoryQuoted:
Mind posting some pics of it? Did you build your like jaqufrost? Quote HistoryQuoted:
Quoted:
here is another little clip. testing the new finger stop. its just a pmag dust cover with the tabs grinded off https://www.youtube.com/watch?v=mk6kDKXAbOI Mind posting some pics of it? Did you build your like jaqufrost? I picked up one of these things used recently...
I might give this a shot. |
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Posted: 1/30/2015 4:58:49 PM EDT
[#18]
What is the slowest lock-time trigger that doesn't suck? I think I am ready to do an overhaul on my BumpSAW finally.
I am thinking of getting the orange spring like jaqufrost suggested, and maybe a LW carrier. It's either that or leave it be and start new. I could use my primary rifle I suppose. Just a DIY stock and a bipod... Edit: photobucket has some cool editing tools... 
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Posted: 1/30/2015 5:39:17 PM EDT
[#19]
I've been wanting to try the CMC drop in trigger. I don't have one yet though.
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Posted: 1/30/2015 6:21:21 PM EDT
[#20]
I'm just trying to figure out what happened to my gun to make it so slow. My RoF in this video was literally ideal. 503G's gun is more impressive, but this is probably the sweet spot. At least in my opinion.
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Posted: 2/7/2015 3:45:35 PM EDT
[#21]
My bump saw is alive!! I sawpped the RRA NM 2 stage for a mil spec standard trigger and JP light yellow springs. Had a couple single shots, but some excellent bursts and half mag dumps. Used M193 ammo and a Saker 556 suppressor. She wouldn't work unsuppressed, so I guess I'll have to use the can full time :-D.
Got some video, I'll figure out how to edit them all together in the next day or so. |
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Posted: 2/7/2015 11:18:32 PM EDT
[#22]
Quote HistoryQuoted:
My bump saw is alive!! I sawpped the RRA NM 2 stage for a mil spec standard trigger and JP light yellow springs. Had a couple single shots, but some excellent bursts and half mag dumps. Used M193 ammo and a Saker 556 suppressor. She wouldn't work unsuppressed, so I guess I'll have to use the can full time :-D. Got some video, I'll figure out how to edit them all together in the next day or so. SWWWEET. Be sure to post in the GD thread, too. |
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Posted: 2/8/2015 1:27:15 AM EDT
[#23]
First ever youtube video, also first ever edit job. My wife was filming, kinda strays downrange, but you can still hear the shots, it was awesome! Had two flavors of ammo, Monarch steel case and American Eagle XM193. Really only works in the prone supported, as seen in the video. Also shot it unsuppressed, was only single shot so I didn't include it. It's a piston gun and gas settings were adjusted accordingly. I think the added weight of the silencer was helping with the bump action.
[youtube]https://www.youtube.com/watch?v=u9SYxCyDowI&feature=youtu.be[/youtube] My video add isn't embedding... |
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Posted: 2/8/2015 1:46:25 AM EDT
[#24]
Quote HistoryQuoted:
First ever youtube video, also first ever edit job. My wife was filming, kinda strays downrange, but you can still hear the shots, it was awesome! Had two flavors of ammo, Monarch steel case and American Eagle XM193. Really only works in the prone supported, as seen in the video. Also shot it unsuppressed, was only single shot so I didn't include it. It's a piston gun and gas settings were adjusted accordingly. I think the added weight of the silencer was helping with the bump action. https://www.youtube.com/watch?v=u9SYxCyDowI&feature=youtu.be
My video add isn't embedding... You have to be a Team member to embed
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Posted: 2/8/2015 4:01:31 AM EDT
[#25]
Love the bipod man.
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Posted: 2/9/2015 10:03:56 AM EDT
[#26]
Quote HistoryQuoted: First ever youtube video, also first ever edit job. My wife was filming, kinda strays downrange, but you can still hear the shots, it was awesome! Had two flavors of ammo, Monarch steel case and American Eagle XM193. Really only works in the prone supported, as seen in the video. Also shot it unsuppressed, was only single shot so I didn't include it. It's a piston gun and gas settings were adjusted accordingly. I think the added weight of the silencer was helping with the bump action. https://www.youtube.com/watch?v=u9SYxCyDowI&feature=youtu.beMy video add isn't embedding... Looked fun. I'm surprised it was only working with the suppressor. |
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Posted: 2/9/2015 2:36:33 PM EDT
[#27]
I took the can off just to see if it would work. Shooting unsuppressed is rude and uncivilized.
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Posted: 2/9/2015 2:47:40 PM EDT
[#28]
Lol, I don't know how many rounds my suppressor would hold up to when spitting them out at 750-1000 rpm.
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Posted: 2/9/2015 6:21:06 PM EDT
[#29]
Sweet
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Posted: 2/10/2015 11:53:14 PM EDT
[#30]
Anyone ever bump stock an AR10? I think I need a bump 240.
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Posted: 2/10/2015 11:54:26 PM EDT
[#31]
What about a bump BREN? I think we might be able to get close.
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Posted: 2/22/2015 3:17:07 PM EDT
[#32]
Quote HistoryQuoted:
What about a bump BREN? I think we might be able to get close. The bren-configured M96 is a really good candidate. edit: DYAC |
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Posted: 2/22/2015 10:39:04 PM EDT
[#33]
Quote HistoryQuoted:
The bren-configured M96 is a really good candidate. edit: DYAC Quote HistoryQuoted:
Quoted: What about a bump BREN? I think we might be able to get close. The bren-configured M96 is a really good candidate. edit: DYAC Does the Rock River take L1A1 mags? If it does, you could take an actual .308" BREN mag, flip it upside down, put on an offset reddot, and mount the bipod upside down on the top rail (now the bottom). Bumpfire upside down & we have something not too far off the BREN. |
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Posted: 2/23/2015 12:15:31 PM EDT
[#34]
Quote HistoryQuoted:
Does the Rock River take L1A1 mags? If it does, you could take an actual .308" BREN mag, flip it upside down, put on an offset reddot, and mount the bipod upside down on the top rail (now the bottom). Bumpfire upside down & we have something not too far off the BREN. Quote HistoryQuoted:
Quoted:
Quoted: What about a bump BREN? I think we might be able to get close. The bren-configured M96 is a really good candidate. edit: DYAC Does the Rock River take L1A1 mags? If it does, you could take an actual .308" BREN mag, flip it upside down, put on an offset reddot, and mount the bipod upside down on the top rail (now the bottom). Bumpfire upside down & we have something not too far off the BREN. Yeah that would be pretty cool. You could stick the pistol grip where the rear BUIS would go, and use it with your weak hand to push forward for the bump. You could also flip the stock over 180° I pondered this, and I was wondering how hard it would be to do something like this with a bulpup. the trigger system seems riper for the moving. |
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Posted: 2/28/2015 6:00:18 PM EDT
[#35]
I just got my AP Customs Low Mass BCG in. I put the POF roller cam on it and dropped it in today. I can't wait to get it to the range!
 Here is my full picture review of the BCG: |
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Posted: 3/3/2015 2:30:03 AM EDT
[#36]
Quote HistoryQuoted:
I just got my AP Customs Low Mass BCG in. I put the POF roller cam on it and dropped it in today. I can't wait to get it to the range!http://i739.photobucket.com/albums/xx39/jaqufrost/Mobile%20Uploads/2015-02/20150228_145659_zpsurakmbuy.jpg Here is my full picture review of the BCG: http://www.ar15.com/forums/t_3_118/669835_AP_Customs_Rhino_Low_Mass_5_56_Bolt_Carrier_Group_Picture_Review_and_POF_Roller_Cam_installation.html Jaqu, what buffer are you using with that sprinco spring and this bcg? |
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Posted: 3/3/2015 10:08:22 AM EDT
[#37]
Quote HistoryQuoted: Jaqu, what buffer are you using with that sprinco spring and this bcg? Quote HistoryQuoted: Quoted: I just got my AP Customs Low Mass BCG in. I put the POF roller cam on it and dropped it in today. I can't wait to get it to the range!http://i739.photobucket.com/albums/xx39/jaqufrost/Mobile%20Uploads/2015-02/20150228_145659_zpsurakmbuy.jpg Here is my full picture review of the BCG: http://www.ar15.com/forums/t_3_118/669835_AP_Customs_Rhino_Low_Mass_5_56_Bolt_Carrier_Group_Picture_Review_and_POF_Roller_Cam_installation.html Jaqu, what buffer are you using with that sprinco spring and this bcg? |
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Posted: 3/3/2015 3:45:33 PM EDT
[#38]
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Posted: 3/3/2015 3:58:54 PM EDT
[#39]
For anyone looking for a budget low mass carrier, rubber city armory is now offering one. Not as light as the AP Custom, but retains forward assist serrations if you want it.
https://www.rubbercityarmory.com/scripts/prodView.asp?idproduct=51 |
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Posted: 3/13/2015 6:19:05 PM EDT
[#40]
Quote HistoryI will be so JELLY. |
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Posted: 3/13/2015 6:28:01 PM EDT
[#41]
Quote HistoryQuoted:
Does the Rock River take L1A1 mags? If it does, you could take an actual .308" BREN mag, flip it upside down, put on an offset reddot, and mount the bipod upside down on the top rail (now the bottom). Bumpfire upside down & we have something not too far off the BREN. Quote HistoryQuoted:
Quoted:
Quoted: What about a bump BREN? I think we might be able to get close. The bren-configured M96 is a really good candidate. edit: DYAC Does the Rock River take L1A1 mags? If it does, you could take an actual .308" BREN mag, flip it upside down, put on an offset reddot, and mount the bipod upside down on the top rail (now the bottom). Bumpfire upside down & we have something not too far off the BREN. Ponder this: AR, mounted in tripod, upside down, 100 round SF mags, spade grip/trigger, hooked to hand crank, hand crank gear-increased to 1:2. Could be awesome. |
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Posted: 3/13/2015 6:51:11 PM EDT
[#42]
Quote HistoryQuoted: First ever youtube video, also first ever edit job. My wife was filming, kinda strays downrange, but you can still hear the shots, it was awesome! Had two flavors of ammo, Monarch steel case and American Eagle XM193. Really only works in the prone supported, as seen in the video. Also shot it unsuppressed, was only single shot so I didn't include it. It's a piston gun and gas settings were adjusted accordingly. I think the added weight of the silencer was helping with the bump action. https://www.youtube.com/watch?v=u9SYxCyDowI&feature=youtu.beMy video add isn't embedding... |
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Posted: 3/21/2015 5:31:01 PM EDT
[#43]
Pondering doing something like this now that I have some free time.
This is a way to use a Dolos quick detach barrel with a bipod. The thing on the bottom would be rectangular steel attached to a reciter clamp. I would perhaps put something to attach to the barrel because it's not important for me to free float and I would like to spread the stress. It might be as simple as a spring clip on the barrel though; just something that stops the tube from bending too far out of parallel. M249 bipods could be used, and probably the hand-guards as well. A matching barrel would be ready to swap out. I think this is doable.  |
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Posted: 3/22/2015 12:15:32 AM EDT
[#44]
Quote HistoryQuoted:
Pondering doing something like this now that I have some free time. This is a way to use a Dolos quick detach barrel with a bipod. The thing on the bottom would be rectangular steel attached to a reciter clamp. I would perhaps put something to attach to the barrel because it's not important for me to free float and I would like to spread the stress. It might be as simple as a spring clip on the barrel though; just something that stops the tube from bending too far out of parallel. M249 bipods could be used, and probably the hand-guards as well. A matching barrel would be ready to swap out. I think this is doable. http://i72.photobucket.com/albums/i172/schkoot/91ACCF16-B2D1-4DD2-B3AD-35615265030C_zpsw9l3zzis.jpg Duuuuuuuuuude, that's a kick ass idea. I thought that dolos gimmick was, well, just a gimmick. I really think you have something there. Combo that with a belt feed mechanism and you'd have a legit SAW. |
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Posted: 3/22/2015 12:18:23 AM EDT
[#45]
Anyone have a link to the dolos system?
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Posted: 3/22/2015 12:52:40 AM EDT
[#46]
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Posted: 3/27/2015 3:02:01 PM EDT
[#47]
Hello there,
I am an older gun guy and have been bumping since before it was all the rage..maybe not the rage anymore, but still very fun. I came into a fair priced used Fostech bump stock recently (had one before but sold it for whatever reason. I plan to build a dedicated bumper again. Besides the occasional OOB occurrence, would a 9mm experience as many hammer follows.....do you think. I would still set it up as a prone or bench style gun. Thoughts? |
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Posted: 3/27/2015 3:10:08 PM EDT
[#48]
I expect it would experience fewer hammer follow issues, but it's much more likely to have OOB issues. You wouldn't have to worry about the time it takes for the rotating bolt to close, I don't think it would be pretty if you lit one off too early though.
On my 5.56 gun I've moved to the Sprinco Orange spring. It is very stiff compared to stock. Other springs I would consider looking into are the Tubbs flatwire .308 spring, ARES Armor's Shrike spring, MGW's 2x spring or a cut down MG34 spring. |
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Posted: 3/27/2015 4:36:47 PM EDT
[#49]
I have had a few OOBs before in other 9mm setups when bumping, but most of the few that I had were related to something causing the bolt to slightly drag and close very slowly when almost into battery....then causing the OOB ignition. It didn't hurt anything, it just gets your attention
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Posted: 3/27/2015 4:40:31 PM EDT
[#50]
Another benefit to the 9mm is the short stroke needed. I would shorten the stroke as much as possible, maximize spring strength for a faster return and try to find a buffer that minimizes bolt bounce without being too heavy - again to minimize time out of battery.
What parts are you planning on using so far? |
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