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Posted: 6/19/2014 8:49:47 PM EDT
| I have a sbr lower that's currently home to my .300BLK upper, and would like to have a .45 upper as well, with the intent to run a large handguard/quadrail, then run a can underneath, preferably on a 8in barrel. Does anyone (other than Olympic) offer a .45 upper that will run on a milspec lower? |
| Shoot me an email to [email protected] and I'll be happy to send you pics and info on the uppers I build and the magwell adaptor that uses HK USC magazines. My OEM handguard is a Samson Evolution with an internal diameter if 1.5 inches..... But let me know the diameter of your can and I'm sure we can find a solution. |
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Check Out RMW Xtreme's DI45. See http://www.rmwxtreme.com
Dave in Florida |
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I have a magblock that takes converted GG mags. Here is a video using them with a 10mm. magblock & mags
I use YHM rails on all my builds unless somthing diferent is requested. The YHM will take a can of up to 1.7". Plenty of room for ventilation. Also working with a friend to make internaly supressed DI uppers a reality. Not exactly what your looking for but with the can perm attached you will only need one stamp. They will be very quiet 
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Here is another video for you to check out.....Not sure on capacity but Ron's converted Grease gun mags are the highest capacity currently available for a Stock lower.....If you are more interested in an off the shelf mag but with a lower capacity...the USC adaptor I make uses off the shelf HK USC magazines available from Promag in 10, 15, and 20 round capacities.....
USC Magwell adaptor demo You mentioned 8 inch barrel......the adaptor runs fine with that length, but due to the single stack nature of the mag and the added spring pressure, the last round bolt hold open is iffy with barrel shorter than 10 inch. |
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I have two .45 uppers from Rudy at Macon Armory and I could not be happier. He built the first upper to be used on an SBR with a suppressor but I've run it both with and without and have no problems at all. Rudy was very hesitant to go as short as I wanted with the barrel but using USC magazines with his magwell adapter it cycles perfectly and holds open on an empty mag every time for me. As you would expect, it gets dirty very quickly with the can on but I've shot several boxes through it before cleaning without a single failure.
The second upper from Rudy is mounted on an AR45 lower from CNC Guns which uses gg mags. With it I had to swap buffer springs to get it to 100% but since finding one it likes, it is flawless. Rudy put a ton of work into the uppers and kept in contact with me throughout both builds. I honestly could not have asked for better customer service than I got with the folks at Macon Armory and I do not hesitate to recommend them. |
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Rudy (Mad Machinist) built my upper and I'm really happy with it. Rudy is great guy to deal with. I'm using a CNCGuns lower but that USC conversion has my interest.
I went with a 7.5" barrel and run it suppressed and I think it runs really clean - but I used Olympic blow-back uppers for years. THOSE were dirty! I don't think my .45 gets any dirtier than my 5.56 SBR. |
| What about uppers from Bazooka Brothers? I just started thinking about a .45 upper myself and just started searching. Need a lower too. |
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Bruce at Bazooka Brothers has a great lower.....I have one and my uppers run flawlessly on it......basically three uppers available, Macon Armory DI(me) RMW Xtreme DI and Olympic arms blowback......MGI has one but it is somtimes difficult to source......Lowers....CNC AR45, Bazooka Brothers BAZ45, RMW's new lower, GWACS Cav Arms MkII with a Hahn Magwell adaptor, (all Grease Gun mag lowers) and my HK USC magazine adaptor and Ron's modded greasegun mag adaptor for standard lowers.....I'm sure he'll be along in a few to describe it. Oh....forgot the MGI lower with interchangeable magwell. The CNC uses Grease gun mags with no machining.....the RMW and BAZ require cutting a retention notch in the mag, the Cav Arms has a paddle release like an AK and Ron's magwell adaptor requires extensive mods to the mag. The USC magwell adaptor I make uses lower capacity mags than the RMW modded grease gun mag (Not sure on capacity of them but I'm sure Ron will fill in the blanks) but uses an off the shelf mag available in 10, 15 and 20 round capacities available form Promag. It is a zytel mag with a steel liner and feed lips.....the adaptor uses a paddle release and has a last round bolt hold open feature. The USC adaptor is limited to 10 inch and longer barrels for proper function. I originaly designed it for those behind enemy lines in CA, NY, CO, CT and the rest of the non free states.
Hope my nutshell view of the status of the current state of the 45 AR15 world is helpful. I also have a new mag for 45 in development.....but it is just that...in development 
Below is a pic of my USC conversion kit......only picture I had of the adaptor handy.. PS ...I forgot to mention DDLES Large frame glock mag lowers if you can find one 
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Thanks so much for all the input. My single biggest requirement is the upper has to be able to run on a milspec lower, specifically the sbr lower I have now, and the can will be shared between it and a handgun host, so permanently affixing it is not an option.
Email sent Rudy, I really dig how the magwell adapter is a quick change item with no permanent alterations of your factory lower. |
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Interesting, can you ream your 45 barrels to accept 460 Rowland? I was looking at doing a 45 AR pistol a few months ago when I did my 9MM AR Pistol but living in CA I couldn't find any relatively inexpensive 10-round grease gun mags that weren't $40-$60 each so that nixed the project. The use of HK mags opens it up again.
Fred |
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Yep...just need to get either a set of headspace gages...or the dimensions to make some.....
shoot me an email and we can work out the details of what you'd like.... [email protected] Rudy |
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Rudy I known your stance on this :) but what the general consensus on running the can under the hand guard on a 45 upper? The can I'll be using is a silencerco octane 45 HD and im thinking a 8 or 10 in barrel and 8.75in can for total length of 16.75-18.75. This being said, the particular rail I was looking at was the spikes 13.25 in BAR rail, with i.d. of 1.8in, which should be plenty of ventilation room for a can of max dia of 1.375in. I don't think it would get too hot to hold, as I do plan on running a Viking tactics skeletonized fore grip about 6in out on the 8in barrel, or 8in out on the 10in.
Next question, what happens when you shoot a 8in barreled 45 upper with a 13 in. aluminum hand guard unsuppressed, as long as your hands are behind the muzzle? |
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Rudy I known your stance on this :) but what the general consensus on running the can under the hand guard on a 45 upper? The can I'll be using is a silencerco octane 45 HD and im thinking a 8 or 10 in barrel and 8.75in can for total length of 16.75-18.75. This being said, the particular rail I was looking at was the spikes 13.25 in BAR rail, with i.d. of 1.8in, which should be plenty of ventilation room for a can of max dia of 1.375in. I don't think it would get too hot to hold, as I do plan on running a Viking tactics skeletonized fore grip about 6in out on the 8in barrel, or 8in out on the 10in. Next question, what happens when you shoot a 8in barreled 45 upper with a 13 in. aluminum hand guard unsuppressed, as long as your hands are behind the muzzle? If you dont mind the added length the longer brl will be quiter than the short one. Not alot but noticable. I always ask customers if it they are looking for a compact weapon or one a little quiter. You want to put an extended flash hider on it to keep the muzzle blast out of the HG. |
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I make them............not sure if any are commercially available for a 45, plenty out there for 5.56......I'm in the middle of a batch right now...should have some finished and installed on a group of uppers I am doing for a local customer that is building 3 SBR AR45 suppressed guns......all identical ...will be pining and welding 5.5's till his Form 1's come back.....and then removing them when they do...... He wants to be able to shoot till his SBR stamps and can stamps all come back.
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My friend was telling me he thought he saw flash hiders/thread protectors that are 5+ inches long. Anyone have any more info on these? Olympic Arms makes (or made) them. This is a pic of an Oly .45 upper I sold years ago. 
If you want to try and get one you could call Olympic. They do answer their phone and take orders in my experience. But Rudy makes better quality stuff in my opinion and probably for less money. ETA: Is this for a non-SBR lower? If so, the flash hider will have to be permanently attached. I'd sooner do an 11.5" pistol build with an eye toward a stamp in the future. |
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Looks like I'll be adding that to my order Rudy. Don't let me forget it :) Nah its for a SBR lower, just want to be able to shoot unsuppressed and not blow my fingers/forearm/rail off.
Hey just curious, could you fan one that stopped flush at the end of the forearm/quad rail then affix a piece kinda like a large washer to fill the gap between the rail and muzzle device? I was thinking then add holes around that circumference that would take a standard barrel nut wrench do removal/installation. I think you get what I mean, but I can draw you up a picture to give you a better idea if it's something you would be willing/able to work with. I'm actually on my phone so I can't upload pictures, but if you google "quad rail endcap" it'll show you exactly what I mean. Only difference would be instead of it screwing around the barrel and threading to the interior of the quadrail, it would be welded on the backside to the muzzle device, and free float a few thousandths from the interior edge of the quad rail. It goes without saying you would need the rail first. End result would be something very close to this, except completely flush. Sorry hyperlink button won't work on phone. http://www.google.com/search?q=barrel+flush+with+quad+rail+end+cap&hl=en&tbm=isch&ei=0dyoU49xyJGoBrrfgbAH&start=0&sa=N#i=0 |
| I have 2 integrally suppressed 9mm uppers. I am about to rebuilt the 2nd one. But the first does sit under a rail. I have also played with other setups with cans somewhat tucked under the rail. The heat will transfer to the rail system with enough shooting, especially out towards the end of the rail. Solutions: full rail covers, VFG, shooting gloves are your options. |
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Will all of the discussed 45 uppers function in full auto on an M16 lower? 9mm uppers are reported to stress the pins of an M16 lower. Will these do the same? RMW Xtreme's or Mad-Machinist's 45 uppers are Gas Operated and are very easy on the H/T Pins. There's very little felt recoil and when set up with the right weight buffer, run flawlessly in FA. Nothing like the Blow Back 45 Options the DI45's will stay on target for the full magazine..... I'm Hog Hunting this weekend with one of Ron's DI45 Win Mags....
Dave in Florida |
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RMW Xtreme's or Mad-Machinist's 45 uppers are Gas Operated and are very easy on the H/T Pins. There's very little felt recoil and when set up with the right weight buffer, run flawlessly in FA. Nothing like the Blow Back 45 Options the DI45's will stay on target for the full magazine..... I'm Hog Hunting this weekend with one of Ron's DI45 Win Mags....
Dave in Florida Quoted:
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Will all of the discussed 45 uppers function in full auto on an M16 lower? 9mm uppers are reported to stress the pins of an M16 lower. Will these do the same? RMW Xtreme's or Mad-Machinist's 45 uppers are Gas Operated and are very easy on the H/T Pins. There's very little felt recoil and when set up with the right weight buffer, run flawlessly in FA. Nothing like the Blow Back 45 Options the DI45's will stay on target for the full magazine..... I'm Hog Hunting this weekend with one of Ron's DI45 Win Mags....
Dave in Florida Dave wish I was with ya...... I get to go to just outside Chicago all next week with the wife for a visit with the in laws....at least it is Indiana and my carry permit is good..........just curious as I have't run either.....how does the 460 Rowland compare with the Win mag for pigs?
Dave is right on as far as the lack of recoil stress....we have a Plum Crazy shop lower we keep an upper on and a USC adaptor in in the shop for "stress relief"....if something is driving you to the brink or you just can't solve a problem you are working on....ya grab it and go out to the test pile o dirt and burn a mag.....it does wonders and it is approaching the 3500 round mark with no adverse effect...and it still has the polymer pins in it.....
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Win Mag uses heavier bullets up to 320gr at 1150 FPS compared to 460 Rowland up to 230gr at 1350 FPS. A good shot and either will work.
This hunt has become a Cluster F... 25 were supposed to go initially, hunting on 3,000 acres. Now 2 of us are going and I don't even know an address yet. We leave today. I'm using a 16", 45 Win Mag with a 230 grain ball. Behind the ear and gone. Dave |
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Will all of the discussed 45 uppers function in full auto on an M16 lower? 9mm uppers are reported to stress the pins of an M16 lower. Will these do the same? Quoted:
Will all of the discussed 45 uppers function in full auto on an M16 lower? 9mm uppers are reported to stress the pins of an M16 lower. Will these do the same? The DI uppers do not stress any parts in your lower. This is what i use for full auto with std M16 lowers. This one is a 10mm. M16 mag conversion Quoted:
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Will all of the discussed 45 uppers function in full auto on an M16 lower? 9mm uppers are reported to stress the pins of an M16 lower. Will these do the same? RMW Xtreme's or Mad-Machinist's 45 uppers are Gas Operated and are very easy on the H/T Pins. There's very little felt recoil and when set up with the right weight buffer, run flawlessly in FA. Nothing like the Blow Back 45 Options the DI45's will stay on target for the full magazine..... I'm Hog Hunting this weekend with one of Ron's DI45 Win Mags....Dave in Florida
Dont forget to let me know how it goes. You know killing hogs is like my second job
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Hog Hunt: My Buddy Klossi got a Hog Friday Night. I sat in a Blind until I couldn't see what I'd be shooting.
There were supposed to be 2 big Hogs at that feeder I was sitting next to but all I saw were Squirrels and Doves. The Squirrels were knocking the grain from the feeder and the Doves were feasting. I really needed NV or IR cause they likely came to the feeder after it was totally black out. BTW: I hate sitting in a blind to hunt. Klossi's was big enough to fill the rear compartment of my Explorer so we didn't really have any extra room for another. We were supposed to have between 6 and 25 show up for the hunt but didn't. So we stayed up until 4:30 BS'ing with our host and looked over 400 acres Saturday for our next trip. Slept in AC and had a great time. These people are some of the best I've ever met and they own 37,400 Acres. That was a bit overwhelming. BTW: Klossi used a 44 Magnum, Marlin. 1 head shot and done. I never fired a shot as there was none to take. I'd sure like to move to an area closer. It ended up being a 220 mile round trip but we had a really good time. Dave |
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Yeah. I already have a 45 can and a couple sbr lowers... Quoted:
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This thread is going to cost me a lot of money. But think of all the fun you're gonna have Yeah. I already have a 45 can and a couple sbr lowers... Just give me a shout by email when you get ready...... We'll get you squared away. |
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Just give me a shout by email when you get ready...... We'll get you squared away. Quoted:
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This thread is going to cost me a lot of money. But think of all the fun you're gonna have Yeah. I already have a 45 can and a couple sbr lowers... Just give me a shout by email when you get ready...... We'll get you squared away. Might want to take a look at the guy who started the DI45 game Been doing these longer than anyone else.
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Explore all the options....... I could not agree with you more. IM me for specials. This macon armory or this RMWXTREME |
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Explore all the options....... I could not agree with you more. IM me for specials. This macon armory or this RMWXTREME dont guess i coudl get on a news email list ? |
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