You could ask MPA to set it up to run AICS instead of AW. Would need the tab that ships with action installed in the chassis. That way you could run the MDT BR or whatever AICS.
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ARC Coup de Grace Builds
- Thread starter Awag1000
- Start date
Anybody opened up a 3.715” AICS magwell for the 3.850” CIP AICS mags? That’s the only real change I want to make and it sounds as simple as filing 0.135” off the front edge of the magwell?
I think it comes set up to run Aics mags. It ships with an AI mag.
I have some accurate mags that they said should run but I was referring to the mdt mag because they said it wouldn’t work with 3 lug receivers. But I’ve heard some people say it will.
Not to worry, Boeing already did the bolt check
Went out to "Rifles Only" and had a great time, jammed it into a few barricades and other shit a few times, no problem. At this point, I'm more into drawing blood than, arguing with keyboard experts, playing weekend wanna-be-sniper and pinging steel.
I may do a larger write up on this, but here is what I did to make a 12rn AW mag. I shoot PRS "weekend warrior" and used the the CDG for most of the season last year. I lost out on lot of points because I could only load 10 rounds. With the factory follower and running 6CM, I could load 11 rounds and I was pretty fast on a single load from the quiver, so I never put too much thought into modifying a AW. Then when I switched to 6BRA and the HRD mag kit, I could only load 10 rounds and then a shot a lot of matches with 12 round stages so I decided to look into a mod. I read the posts by 375Max in which he made his own, with a whole lot of machining and welding work. I do not have that type of machinery or his knowledge, but I do have a Dremel.
All I wanted was to fit 12 rounds, not more. I believe 375Max can run 14 with his design. I purchased the Area419 ACIS mag extension, which slides right onto the bottom of the AW mag with no modifications. I took the follower, traced it on the bottom of the AW mag, took the Dremel and cut the plate out so the spring would rest on the mag extension, but the follower would not pass the bottom of the mag. The spring in the HRD kit is longer then the factory spring and I think that helps the mag run properly. Once I put everything together, I loaded up 12 rounds. The 12 round, there is very little movement, but there is a little, enough to operate. It was cycling fine, but then I thought about the waisted space in the mag extension. I ended up placing a 1/2" piece of white plastic in the bottom of the mag extension which provided a little more tension with the follower. I also added a brass nut on the Allen head bolt that keeps the mag extension from sliding off. The mag ext could move because of the bevel on the bottom of the AW. I would like to switch the nut to a oring.
I did this mod late last year, but wanted to test it before writing anything up. I finally shot a match with it a couple weekends ago and it worked flawlessly. Probably shot 6 stages with it, in terrible weather with zero issues. That also goes for the CDG action. I have probly shot 10 matches with this action and I absolutely love it. As far as a competition action I can not find any real faults with it. The only thing that I do not like is that I can not use my MPA brass catcher due to control feed design. Depending on how hard you run the bolt, the brass will eject at different angles and cause a malfunction.
All I wanted was to fit 12 rounds, not more. I believe 375Max can run 14 with his design. I purchased the Area419 ACIS mag extension, which slides right onto the bottom of the AW mag with no modifications. I took the follower, traced it on the bottom of the AW mag, took the Dremel and cut the plate out so the spring would rest on the mag extension, but the follower would not pass the bottom of the mag. The spring in the HRD kit is longer then the factory spring and I think that helps the mag run properly. Once I put everything together, I loaded up 12 rounds. The 12 round, there is very little movement, but there is a little, enough to operate. It was cycling fine, but then I thought about the waisted space in the mag extension. I ended up placing a 1/2" piece of white plastic in the bottom of the mag extension which provided a little more tension with the follower. I also added a brass nut on the Allen head bolt that keeps the mag extension from sliding off. The mag ext could move because of the bevel on the bottom of the AW. I would like to switch the nut to a oring.
I did this mod late last year, but wanted to test it before writing anything up. I finally shot a match with it a couple weekends ago and it worked flawlessly. Probably shot 6 stages with it, in terrible weather with zero issues. That also goes for the CDG action. I have probly shot 10 matches with this action and I absolutely love it. As far as a competition action I can not find any real faults with it. The only thing that I do not like is that I can not use my MPA brass catcher due to control feed design. Depending on how hard you run the bolt, the brass will eject at different angles and cause a malfunction.
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Just curious is all. I used them for mine, but cut the entire bottom off and welded new "wings" on the sides. Not a lot of fun, that's for sure.
I just ordered an Altus mag extension and going to try and use a hybrid of what you did and what @ThisGuy did.
Did you reuse the regular AW spring?
No, the HRD 6BRA kit has a new follower and spring, it is almost an inch longer, maybe an extra coil, I forgot to take an extra pic while it was apart.
I’m sorry, I meant that question for @kindabitey since he used the shorter Altus extension.
I did catch what you used. It was a nice write up.
So it seems as though the easy answer is to get fast with mag changes.
Pretty much. I think all together it takes me about 90 min. to do one, which is why I'm only doing them for a select few. I don't need another job
that doesn't pay anything. I already have one of those.
But for you guys running a BR based cartridge, there should be an answer coming from a reputable source in the next few weeks.
Just finished my CDG build - going down from a handful of centerfire rifles to one (just had a kid, budget and time constraints) so I tried to build a good do-all rifle. I originally was going to build a full out XM3 clone but decided to make a few technological upgrades along the way while keeping the “look”.
CDG SA
McMillan A1-3 Marsh camo
Bartlein carbon M40 18” 6.5 Creedmoor
Forward controls design long Keymod FH
LRI clone front rail
TT diamond
AW mags
Excited to see if she shoots as good as she looks!
CDG SA
McMillan A1-3 Marsh camo
Bartlein carbon M40 18” 6.5 Creedmoor
Forward controls design long Keymod FH
LRI clone front rail
TT diamond
AW mags
Excited to see if she shoots as good as she looks!
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Is anyone using the timney elite hunter trigger without any issues? I tried installing mine today and the hanger holes and trigger holes don't match up. Seems like the hanger is resting on the shelf on the side of the trigger housing so it's unable to go low enough to line up.
I'm assuming just need some 300 plus grit sandpaper on a flat surface and just take off some of the hanger till it fits?
I mangled mine with a rotary tool when fitting my Timney, needed to clear the safety lever mechanism more than anything.
Finally got my "budget" build put together:
CDG SA
Carbon Six bull contour 22" 6.5 CM
Tract Toric 4.5-30x56
Seekins 1.0" rings
Adjustable Grayboe Renegade with Grayboe hunter bottom metal
Tier One Atac bipod
TriggerTech special two stage
Had to file the mag catch down some to get AWs to fit, but no problem after that. Also had to relieve the stock some in front of the rear action pillars to clear the trigger hanger, similar to what others have had to do for other stocks. I'm hoping to shoot her soon.. after that going to get some cerakote.
Alright finally got things had tight lol. CDG long action PVA osprey carbon 25”. 28 Nosler Krg Bravo and Vortex Razor LHT. 10.3 lb on the kitchen scale
The important thing to know here is what batches of Stagg Jr and ECBP are in the background!
Oh yeah…rifle looks good too
What all did you have to do to get it to fit into the bravo. Looking at getting one for my LA CDG build
A little bit of dremel work and drill and use a counter sunk hex head on the aluminum chassis to trigger guard I also used a shorter m5 set screw at the front of the trigger hanger so it inset so it clears said counter sunk screw. I did think about just using set screws on each side of the forward part of the trigger guard underneath the plastic but this worked well and probably sturdier in the long run
When I worked on mine, I had to open a bit in the front of the trigger hanger, and also chamfer the hole to use a different screw for the trigger guard. I also needed to open the safety selector a touch for the TT safety to clear.
Used some alumablack to darken it back when done.
Used some alumablack to darken it back when done.
Just finished mine, barrel spun up by Lane Shelley at Billet Precision.
CDG action
MPA Matrix Pro chassis
Krieger 1.25" truck axle, 28"
ACE brake
TT Diamond
Razor G3 6x36
ARC MBRACE
Break in and load work this week. Only thing I'm unsure of is feeding, mine doesn't have the tab and I'm running 12rd MDT 6br mags. It feeds nice in the shop, curios to see how it runs under time and hard at a match.
CDG action
MPA Matrix Pro chassis
Krieger 1.25" truck axle, 28"
ACE brake
TT Diamond
Razor G3 6x36
ARC MBRACE
Break in and load work this week. Only thing I'm unsure of is feeding, mine doesn't have the tab and I'm running 12rd MDT 6br mags. It feeds nice in the shop, curios to see how it runs under time and hard at a match.
Well, got it to the range today for the first time, I think it has potential. I had 7 rounds of various range brass that I found to get started with. I shot 3 rounds to get a rough zero. I then shot the last 4 into a group and it came in at .22MOA
Well I got it to the range today for the first time but I think it has potential.
I had 7 rounds of various range brass that I found at different matches to get started. I shot the first 3 to get a rough zero then decided to shoot the last 4 into a group. It came in at .22MOA.
I then moved to the loads I have for my other 6br and shot a 5 round group, it's .23MOA
I then shot an 11rd group, here's the results with numbers, .48MOA!!!
Once I get about 100rd down it I'll do due diligence and a complete load workup but this thing is going to be a hammer!
I am an ELR shooter and don't do PRS, NRL, or hunting. CDG action in MDT ESS Chassis, 3.715" Long Action. 30" bull barrel 7 PRC. No one told me I'd need a shorter mag latch but after much Googling I figured out why the mags wouldn't fully insert. American Rifle Company couldn't help me figure it out (you'd think they'd know about this issue) and MDT was happy to send me a mag latch that turned out to be about 0.060" shorter and now it works great. Using Accurate Mag 300 RUM magazine for round feeding.
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American Rifle Company, Coup de Grace Action, 473 Bolthead, pivoting handle
Trigger Tech Special REM 700 2 stage (8-24/8-32)
Proof Carbon Sendero, 24 inch, 6.5 Creedmoor 1:8 (work done by LRI)
Manners LRH, SA, RH, Plains
Pure Precision M5 BDM
Manners Arca Rail 12 inch
APA Little Bastard muzzle brake, Gen 2
Aw 10 rnd magazine
Vortex Gen III, 6x36-56, Mil/Mil
ARC M-BRACE Rings, 34 mm/28mm
Thunderbeast bipod
Area 419 Arca clamp
12.5 LBS
Trigger Tech Special REM 700 2 stage (8-24/8-32)
Proof Carbon Sendero, 24 inch, 6.5 Creedmoor 1:8 (work done by LRI)
Manners LRH, SA, RH, Plains
Pure Precision M5 BDM
Manners Arca Rail 12 inch
APA Little Bastard muzzle brake, Gen 2
Aw 10 rnd magazine
Vortex Gen III, 6x36-56, Mil/Mil
ARC M-BRACE Rings, 34 mm/28mm
Thunderbeast bipod
Area 419 Arca clamp
12.5 LBS
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My first ever rifle build.
Bartlein barrel chambered in 6BRA
Installed radial muzzle brake
Engraved the barrel
Bix n Andy trigger
I'm a longtime machinist and always wanted to do a build. With a lot of help from a friend we made it happen. I'm very happy with the end result. Just have to get some powder and bullets but otherwise she is ready.
Bartlein barrel chambered in 6BRA
Installed radial muzzle brake
Engraved the barrel
Bix n Andy trigger
I'm a longtime machinist and always wanted to do a build. With a lot of help from a friend we made it happen. I'm very happy with the end result. Just have to get some powder and bullets but otherwise she is ready.
Looks great! Brave man with the radial brake! Have you shot it prone in the dirt yet?
Thank you and I haven't shot it at all yet lol. But most likely 95% of my shooting will be off of a bench. Never thought about the prone shooting, if I hate it too much I'll make a thread protector.
Muzzle brakes are nice. Lots of good options for self timing units on the market. Enjoy the CDG it's a good action with a lit if unique features.
FYI - CDG peeps I have a very limited number of 13 round AW mags I'll be listing for sale latter this afternoon. They're so short that the extension has to have additional clearance at the back for the mag catch on say a MDT elite. Clears a Xylo without additional clearance. Have both with and without the clearance cut. These are for 308/6.5C.
Because they are very short. The way I did these the mag is sunk down into the 419 extension. Also this is with a full length 12rnd MDT spring. Could you clip the spring and get 14-15 in sure. Leave that up to you. It would take a lot of spring to reliably push a true 16rnd double column of 308/6.5C. These are serviceable and repeatable with no wonky angles.
My goal was reliable 13 @ same length as AICS 10.
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ARC Coupe De Grace (.473 Bolt Head)
Pivoting Handle
26” Preferred Barrel Blanks 6.5 Creed. PRS Varmint
Trigger Tech Diamond 2 stage
AW mags
MDT ACC (Full weight Kit)
ATS Tuner Brake
Delta Optics 5-50 (currently mounted)
MDT one piece scope mount
ATLAS Super CAL
Feeds and shoots great.
Pivoting Handle
26” Preferred Barrel Blanks 6.5 Creed. PRS Varmint
Trigger Tech Diamond 2 stage
AW mags
MDT ACC (Full weight Kit)
ATS Tuner Brake
Delta Optics 5-50 (currently mounted)
MDT one piece scope mount
ATLAS Super CAL
Feeds and shoots great.
