Baltimoreed

Thinking about another AR.45 build using a CNC Enterprise dedicated greasegun mag lower and a DPMS slabside upper. Im curious about the CMMG Guard .45 delayed blowback system. Wondering if the 45 bcg and bbl will work with the greasegun lower. I’ve built 3 ar .45s using Olympic bbls and bcg and I like GG mags. I know the 9mm is the go to pcc competition round but I want a 45 and don’t want to buy glock mags. Got plenty of GG mags. I’d appreciate any input. Here’s my last, an AR45/MP5 pistol build.

Don't know if anyone here shoots CAS but our longguns are carried to a rack on the range or put on our carts at our vehicle with actions OPEN, muzzles up. We dont use flags. They stay that way until we carry them to the loading table where the rifle actions are closed hammer down on an empty chamber and the tubular magazines are loaded with the correct number of rds needed for the stage. In Wild bunch the 1897 pump shotguns magazine is also loaded with the correct number of rds and the hammer is down on the mty chamber. (Shotguns are staged mty in non WildBunch shoots and are loaded on the clock.) When the shooter is called to the line he stages his long guns and on the timers command shoots the stage. After being shot each longgun is staged mty, action open, safely pointed down range. At the end of the stage the shooter carries his mty guns to the unloading table, verifies his long guns ( 2 pistols also) are mty and puts the long guns back where they were with the actions open. Muzzles are up most of the time, when he lowers the muzzle it is pointed at the side berm at the loading or unloading tables or down range. The only time that a gun is cleared on the line is in Wild bunch where the 1911 is cleared and holstered ala IPSC. I agree with a previous post, if I'm getting swept accidentally I'd rather be able to see the flag on a cleared gun outside of a bag rather than not be able to see the action of a bagged rifle.

The forward charger on the AR.45-MP5 was more complicated due to the rotation of the cocking piece where it locks on the charging tube. I had to use a flat bearing to allow the front part to rotate while the rear stayed aligned with the gas key. The drill rod had to be offset to go through the gas tube hole.

Here's another view. I also have a short video on Utube under AR.45 forward charging handle. The blued piece is a piece of 1897 winchester shotgun bbl but I've since replaced that with a piece of aluminum thickwall tubing.

Here's what it looks like from the top. You can see the aluminum block with the small bearing, drill rod and return spring. The silver aluminum piece is only a shroud around the bbls muzzle which acts as a forward stop. But I could have used the slots in the forarm as a stop. The piece that wraps around the bbl is steel, the hook is aluminum. The drill rod goes into a modified gas key on the bolt. I have enough rearward movement to eject a live .45 acp round. The Oly wire ejector is mounted in the upper. I alumahyded the parts black. One of my better ideas.

Or you could build your own. I've got bum elbows so I wanted a charger on the handguard not on the upper. I used the gas tube hole in the upper to run my drill rod through. It does not travel with the bolt and has a spring to return it forward. There is a small bearing that rides in the square channel on top of the handguard which keeps an aluminum block from rubbing the handguard. I removed several divisions between the handguard slots to allow the unit to move. The part that goes around the bbl is steel, everything else is aluminum. It works great.

I've got one on my 12 inch bbl .45 sbr and a small one on my extra 9 inch upper but when I rebuilt the 9 inch with MP5 parts there's no place for it. But I've only used the 12 inch in 2 matches so I'm still experimenting to figure out what works.

Newbe here. Another thread mentioned case separation at the cannulure and the need to avoid cases with them. I couldn't figure out why. Trying to run too light of a bolt for the load as mentioned could cause it. A not quite oob event would separate the case at the cannulure. My pcc is a .45 so I don't have these hot rod issues. Big and slow, like me. But I have been experimenting with extra springs under the buffer to smooth out the felt recoil. Seem to help. Am enjoying your posts, MikieM.

Coming from the CAS shooting sports where you carry multiple longguns (a rifle and a sg with a backup sometimes), wear a couple of pistols and need ammunition for them plus food and drink, gun carts are the only way to go. Just roll from stage to stage, the actions are always open with muzzles pointed up or down, imo a lot easier than wrestling an ar bag, range bag with ammo and mags, lunch and a cooler. And time you lay all those range and rifle bags all over the berm you've occupied as much space as gun carts would use. My current cart is very simple and works fine.

Just thought that I'd say hello from eastern NC. I'm more of a CAS /Wild Bunch shooter than anything else but have shot lpsc, idpa, zombie, .22 and a couple of Garand matches. I like that the pcc has taken off like it has. They're a whole lot of fun. I've built 3 AR .45s over the years and am thinking hard about a fourth. Looks like you have a good forum.

I put one on my AR.45 sbr and love it. It's a little bit lower than the red dot that I had on the gun originally and lines up perfectly with my eye. I also have one on my dedicated .22 AR. Won't let me load my photo.

Here's my first build.

I understand that this is Brian Enos' forum which automatically makes it a gamer as opposed to a shtf forum which is great. I used to be a gamer until age and health slowed me down. Now I'm just a CAS, zombie and Wild Bunch shooter. Looking at this thread there are a lot of sharp looking PCCs though they look more like PCRs (pistol caliber rifles) to me. But it appears that 9mm is the only way to go. I built my PCCs before they became so popular and not having a 9 or .40 to my name but a safe full of .45s, my carbines are naturally .45. The uppers are DPMS slickside with Olympic Arms bbls and bolts. The lowers are CNC .45 greasegun mag dedicated lowers. I never liked the ar charging handle so I created a forward charging handle for my first build which is also a 12 inch bbl sbr. I then did my AR Thompson and last year I did a AR MP5 9 inch bbl which is my favorite.