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Posted: 4/10/2014 5:44:28 AM EDT
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg View Quote silence it and use the same handguard as the top upper? |
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg View Quote It looks cold |
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silence it and use the same handguard as the top upper? View Quote View All Quotes View All Quotes Quoted:
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg silence it and use the same handguard as the top upper? No, I'm waiting on my LGS to get some spectre II's in stock. So I have to find something to do in the meantime. |
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No, I'm waiting on my LGS to get some spectre II's in stock. So I have to find something to do in the meantime. View Quote View All Quotes View All Quotes Quoted:
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg silence it and use the same handguard as the top upper? No, I'm waiting on my LGS to get some spectre II's in stock. So I have to find something to do in the meantime. put a fake on it. look here or here |
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg It looks cold I WAS IN THE POOL!! |
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg View Quote As pictured - looks like something out of the "Men in Black" armory. Have fun! YMMV |
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg It looks cold I WAS IN THE POOL!! THERE WAS SHRINKAGE!!!!! Actually, gotta say thanks to the OP. I have a 9mm barrel I'm planning to have cut down, but no silencers in this state, so I wanted to have basically just the muzzle flash sticking out from the end of a 4in pistol quad rail. so it looks like I'll need about a 5.5in barrel to be how I want. This is about the look I'm going for : |
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Remember, the .22 barrel has more of the barrel inside of the receiver. Just so you keep that in mind when figuring length.
I just built a 9mm to match a 5.56 and that was slightly different too. Does that make any sense |
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Remember, the .22 barrel has more of the barrel inside of the receiver. Just so you keep that in mind when figuring length. I just built a 9mm to match a 5.56 and that was slightly different too. Does that make any sense View Quote Yes - makes sense and good thing to point out. YMMV |
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Here's my lil .22 SBR http://www.hunt101.com/data/500/medium/BM22-3.jpg P.S. The comp is needed for the vicious .22 recoil and blast View Quote I'd probably grab the comp and blow off my fingers. Once blew the sideplate/cover off an AR-7 with my hand wrapped around the mag well. Hand hurt like heck for almost a week. Turned funny colors too. Say - is that a polymer lower? Are the pin holes holding up? YMMV |
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How much length does that adapter add?
Also, have you ever had an issue with the base of the suppressor sticking to the barrel threads? |
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Quoted: How much length does that adapter add? Also, have you ever had an issue with the base of the suppressor sticking to the barrel threads? View Quote Below is a pic I found on the net of the adapter. |
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I mean do you ever have the problem of not being able to get the suppressor off of the barrel, since its under those handguards. I've read about instances where the tube separates from the endcap.
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Quoted: I mean do you ever have the problem of not being able to get the suppressor off of the barrel, since its under those handguards. I've read about instances where the tube separates from the endcap. View Quote There is plenty of tube to grab on to and I've had no problems unscrewing the suppressor from the adapter. Keep in mind that since the Sparrow has an O ring to prevent gases from going back into the threads to make them seize up. |
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I'd probably grab the comp and blow off my fingers. Once blew the sideplate/cover off an AR-7 with my hand wrapped around the mag well. Hand hurt like heck for almost a week. Turned funny colors too. Say - is that a polymer lower? Are the pin holes holding up? YMMV View Quote View All Quotes View All Quotes Quoted:
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Here's my lil .22 SBR http://www.hunt101.com/data/500/medium/BM22-3.jpg P.S. The comp is needed for the vicious .22 recoil and blast I'd probably grab the comp and blow off my fingers. Once blew the sideplate/cover off an AR-7 with my hand wrapped around the mag well. Hand hurt like heck for almost a week. Turned funny colors too. Say - is that a polymer lower? Are the pin holes holding up? YMMV No problems at all with the FCG pin holes. It started life as a Bushmaster Pistol......added stock after Stamp came back. It switches from configuration to configuration. It's other configuration is a standard Magpul stock and a 7.5" 5.56 upper. |
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Got my CMMG 4.5" yesterday. Now I need to figure out which handguards to get. It sticks out rougly 3.3 inches from the receiver. Here it is with my 10.5" LMT upper. http://i68.photobucket.com/albums/i24/telsonman/20140409_182701_zpsd0006303.jpg silence it and use the same handguard as the top upper? No, I'm waiting on my LGS to get some spectre II's in stock. So I have to find something to do in the meantime. put a fake on it. look here or here I have a spikes fake can on mine: |
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I'm curious as to the reason for the adapter. The threads are already 1/2x28 right?
I ask because I've got a sparrow in jail and a pending form 1 so I can install the 4.5" cmmg barrel. |
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Quoted: I'm curious as to the reason for the adapter. The threads are already 1/2x28 right? I ask because I've got a sparrow in jail and a pending form 1 so I can install the 4.5" cmmg barrel. View Quote The Taccom 4" barrel has threads that go to the tip of the muzzle. The Sparrow uses "Sparrow threads" which have a space at the muzzle end for an internal O ring to prevent unscrewing and gases from going back into the threads. The point of the adapter is to convert regular 1/2 x28 to sparrow 1/2x28. See the pic below (shamelessly borrowed) which shows barrels with both types of threads. I think the CMMG barrel you bought has the Sparrow threads so you wouldn't need the adapter. |
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No gas block or tube? Can anyone explain how the gas system works with a barrel that small?
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Here is my 4.5" 9mm SBR for inspiration. http://i1272.photobucket.com/albums/y396/GreenGoose/DSC00479_zps6c662d58.jpg View Quote I keep trying myself from starting another project with my second lower and trying to leave it be to not spend the money.... and you fuckers aren't helping on damn bit. |
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I keep trying myself from starting another project with my second lower and trying to leave it be to not spend the money.... and you fuckers aren't helping on damn bit. View Quote View All Quotes View All Quotes Quoted:
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Here is my 4.5" 9mm SBR for inspiration. http://i1272.photobucket.com/albums/y396/GreenGoose/DSC00479_zps6c662d58.jpg I keep trying myself from starting another project with my second lower and trying to leave it be to not spend the money.... and you fuckers aren't helping on damn bit. I had a set up just like this. Same YHM rail. I loved it. When eForms started and worked I filed a From 1 on it. I got the Form 1 back so it has a stock now but I am leaning toward building another 4" upper to make this set up again. It was fun. MAHA |
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It is a .22LR which is does not have a gas system because it is blowback. View Quote View All Quotes View All Quotes Quoted:
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No gas block or tube? Can anyone explain how the gas system works with a barrel that small? It is a .22LR which is does not have a gas system because it is blowback. Thanks! I didn't know that dedicated uppers are that way. |
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The Taccom 4" barrel has threads that go to the tip of the muzzle. The Sparrow uses "Sparrow threads" which have a space at the muzzle end for an internal O ring to prevent unscrewing and gases from going back into the threads. The point of the adapter is to convert regular 1/2 x28 to sparrow 1/2x28. See the pic below (shamelessly borrowed) which shows barrels with both types of threads. I think the CMMG barrel you bought has the Sparrow threads so you wouldn't need the adapter. View Quote View All Quotes View All Quotes Quoted:
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I'm curious as to the reason for the adapter. The threads are already 1/2x28 right? I ask because I've got a sparrow in jail and a pending form 1 so I can install the 4.5" cmmg barrel. The Taccom 4" barrel has threads that go to the tip of the muzzle. The Sparrow uses "Sparrow threads" which have a space at the muzzle end for an internal O ring to prevent unscrewing and gases from going back into the threads. The point of the adapter is to convert regular 1/2 x28 to sparrow 1/2x28. See the pic below (shamelessly borrowed) which shows barrels with both types of threads. I think the CMMG barrel you bought has the Sparrow threads so you wouldn't need the adapter. Thanks for the explanation. Not to side track this thread but I have a tactical solutions x-ring barrel on my 10/22 and it looks like the threads go all the way to the end so should I get one of these adapters if I want to put my sparrow on it? Thanks again. |
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Quoted: Thanks! I didn't know that dedicated uppers are that way. View Quote View All Quotes View All Quotes Quoted: Quoted: Quoted: No gas block or tube? Can anyone explain how the gas system works with a barrel that small? It is a .22LR which is does not have a gas system because it is blowback. Thanks! I didn't know that dedicated uppers are that way. All .22LR in an AR-15 is blowback. It doesn't matter if it is a dedicated upper or a drop in .223 conversion bolt. The only difference between the two is the conversion bolt has the subcaliber insert on the front while the bolt for the dedicated upper has a collar instead. Note: You can take the insert off a CMMG bolt and swap it with a collar. |
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Quoted: Thanks for the explanation. Not to side track this thread but I have a tactical solutions x-ring barrel on my 10/22 and it looks like the threads go all the way to the end so should I get one of these adapters if I want to put my sparrow on it? Thanks again. View Quote View All Quotes View All Quotes Quoted: Quoted: Quoted: I'm curious as to the reason for the adapter. The threads are already 1/2x28 right? I ask because I've got a sparrow in jail and a pending form 1 so I can install the 4.5" cmmg barrel. The Taccom 4" barrel has threads that go to the tip of the muzzle. The Sparrow uses "Sparrow threads" which have a space at the muzzle end for an internal O ring to prevent unscrewing and gases from going back into the threads. The point of the adapter is to convert regular 1/2 x28 to sparrow 1/2x28. See the pic below (shamelessly borrowed) which shows barrels with both types of threads. I think the CMMG barrel you bought has the Sparrow threads so you wouldn't need the adapter. Thanks for the explanation. Not to side track this thread but I have a tactical solutions x-ring barrel on my 10/22 and it looks like the threads go all the way to the end so should I get one of these adapters if I want to put my sparrow on it? Thanks again. While you don't have to get the adapter, what will happen if you don't have one, is that your O ring will get chewed up by the threads with continued installation / removal and gas will get back into the threads. I elected to get one of the adapters to avoid those problems. I just looked at my receipt and with shipping, I paid $33.53 for it.
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Quoted: Is the top barrel from CMMG? If so, what is the thread/flatspot length from the shoulder of the CMMG barrel? View Quote View All Quotes View All Quotes Quoted: Quoted: The point of the adapter is to convert regular 1/2 x28 to sparrow 1/2x28. See the pic below (shamelessly borrowed) which shows barrels with both types of threads. I think the CMMG barrel you bought has the Sparrow threads so you wouldn't need the adapter. http://i1335.photobucket.com/albums/w676/8afuzzball/barrels_zps37b191f1.jpg Is the top barrel from CMMG? If so, what is the thread/flatspot length from the shoulder of the CMMG barrel? The top barrel is not from CMMG, just one I found a picture of to illustrate the difference in the threads. Here are the specs. |
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While you don't have to get the adapter, what will happen if you don't have one, is that your O ring will get chewed up by the threads with continued installation / removal and gas will get back into the threads. I elected to get one of the adapters to avoid those problems. I just looked at my receipt and with shipping, I paid $33.53 for it. View Quote That is a better price than the silencerco website, did you get that online? |
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Quoted: You can buy a shit load of 1/2 o rings for 33.50ish View Quote I agree about the price difference between the adapter and the O rings as I picked up some spare O rings from the Silencer Shop for $5. Note: that inner O ring looks like it will be a bitch to change. However, in addition to O ring damage, I had other reasons, notably my original calculations prior to receiving all the parts put the end of the Sparrow right at the end of my hand guard and the adapter was a good way to extend the length so I could have enough of the suppressor sticking out to unscrew. The other reason was that I was concerned that the suppressor would loosen up without proper O ring engagement. As you can see in the pic, I ended up with more of the Sparrow sticking out that I expected. That was due in part to the hand rail being shorter that what the web site said and that the Sparrow was longer than the measurements I found on the web.
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Quoted: That is a better price than the silencerco website, did you get that online? View Quote View All Quotes View All Quotes Quoted: Quoted: While you don't have to get the adapter, what will happen if you don't have one, is that your O ring will get chewed up by the threads with continued installation / removal and gas will get back into the threads. I elected to get one of the adapters to avoid those problems. I just looked at my receipt and with shipping, I paid $33.53 for it. That is a better price than the silencerco website, did you get that online? I got it from BudsGunShop.Com for $23.53 plus $10 shipping.
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I agree about the price difference between the adapter and the O rings as I picked up some spare O rings from the Silencer Shop for $5. Note: that inner O ring looks like it will be a bitch to change. However, in addition to O ring damage, I had other reasons, notably my original calculations prior to receiving all the parts put the end of the Sparrow right at the end of my hand guard and the adapter was a good way to extend the length so I could have enough of the suppressor sticking out to unscrew. The other reason was that I was concerned that the suppressor would loosen up without proper O ring engagement. As you can see in the pic, I ended up with more of the Sparrow sticking out that I expected. That was due in part to the hand rail being shorter that what the web site said and that the Sparrow was longer than the measurements I found on the web. View Quote View All Quotes View All Quotes Quoted:
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You can buy a shit load of 1/2 o rings for 33.50ish I agree about the price difference between the adapter and the O rings as I picked up some spare O rings from the Silencer Shop for $5. Note: that inner O ring looks like it will be a bitch to change. However, in addition to O ring damage, I had other reasons, notably my original calculations prior to receiving all the parts put the end of the Sparrow right at the end of my hand guard and the adapter was a good way to extend the length so I could have enough of the suppressor sticking out to unscrew. The other reason was that I was concerned that the suppressor would loosen up without proper O ring engagement. As you can see in the pic, I ended up with more of the Sparrow sticking out that I expected. That was due in part to the hand rail being shorter that what the web site said and that the Sparrow was longer than the measurements I found on the web. I do inside o rings on pressure connectors all the time, get a small dental pick, push one side down to the groove then work both ways. it'll go quick after a little practice. |
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I've had a Sparrow supressor for a few years now. It's used on several short barreled (4.5") hosts and still has the original o-ring.
I would classify the use it gets as moderate to heavy. None of the hosts have special threading. No problems with suppressor loosening or becoming difficult to remove. |
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Here's my little blaster, the barrel needs to be cut down to 4" and maybe a new hand guard, this little one is fun
http://i1333.photobucket.com/albums/w625/zavalaoscarl/Guns/IMG_3591-Copy_zps01453da7.jpg |
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Quoted: Here's my little blaster, the barrel needs to be cut down to 4" and maybe a new hand guard, this little one is fun http://i1333.photobucket.com/albums/w625/zavalaoscarl/Guns/IMG_3591-Copy_zps01453da7.jpg View Quote Kinda looks like Han Solo's gun |
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Kinda looks like Han Solo's gun http://i1335.photobucket.com/albums/w676/8afuzzball/HanSolo_zpsb1ebf747.png View Quote View All Quotes View All Quotes Quoted:
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Here's my little blaster, the barrel needs to be cut down to 4" and maybe a new hand guard, this little one is fun http://i1333.photobucket.com/albums/w625/zavalaoscarl/Guns/IMG_3591-Copy_zps01453da7.jpg Kinda looks like Han Solo's gun http://i1335.photobucket.com/albums/w676/8afuzzball/HanSolo_zpsb1ebf747.png LOL! Would be a good prop - a "modernized" blaster. The C96 was 80+ years old when the original Star Wars was made. It's about 118 years old now. The AR design is only about 57 years old.... YMMV |
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This thread is right up my ally. I'm looking at building/buying a .22lr 4.5" upper.
Is there a write-up on assembling a dedicated pistol/SBR .22lr upper? A part list? Best barrel to go with, and why? I'm looking to build it on a budget, so any budget conscious advice would be much appreciated. I'm going to be putting my Octane 45HD on it until my Spectre II gets out of ATF jail. I normally just assemble the lower and buy a complete upper, so this would be my first upper. |
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