XMG Page
XMG Belt-Fed AR-15/M16 Upper Receiver
UPDATE 1/3/2009: We were recently notified by BATFE in a letter dated 12/23/08 that the XMG upper receiver assembly may only be used with semiautomatic lower receivers unless registered on an ATF Form 2 as a dealer sales sample by a licensed manufacturer and Special Occupational Taxpayer. We're seeking clarification on this issue and direction on possible modifications to the existing design. If you have any questions regarding this ruling, please contact BRP CORP at 301-807-5234.
If you would like to come to our facility to see and shoot one of our guns, please call or write to setup an appointment.
Shown on MG-34 Sustained Fire Kit
8mm XMG ($4600) (ffl required)
308 XMG ($4950) (uses belts or M60 links) (ffl required)
All XMGs come with:
All parts necessary to mount on your AR
Manual
Bipod
Stock
Spare Firing Pin Hardware
Spare Buffer Discs
Limited Lifetime Warranty
XMG Receiver Package ($2400) (ffl required): It includes the XMG reciever, bolt carrier assembly with charging handle, firing pin, buffer assembly and all parts necessary to moun on your AR. To complete the assembly, it requires original MG34 bolt head, top cover, feed tray, mainspring, barrel and shroud assembly, buttstock, and ejector plate
Characteristics
This durable milled steel upper receiver alters the method of feed from magazine-only to belt-only and the caliber to 8mm Mauser or 308. It requires no modification to your lower receiver. It simply clips on just like the standard AR-15 / M16 upper receiver. Each XMG comes complete with all parts except for the lower receiver. It is capable of semi-auto-fire-only operation with AR-15 and variant weapons and selective-fire with M16 and variant weapons but may not be used on transferable machineguns. It has a cycle rate of 700-1000 rounds per minute. Original MG34 selective fire components and bolts cannot be introduced to the XMG configuration. The XMG is fed from MG34/42 50-round flexible, metal belts, two or more of which can be joined end to end.
Its design is based on the MG-34 and it utilizes some parts from the MG-34. Most important are the bolt head, barrel, feed cover/tray, and muzzle parts.
Cycle Rates - See four XMGs in the variety of cycle rates we offer. The XMG can be adjusted between 900 rpm to 600 rpm by means of the short recoil spring and buffer. Each XMG in our 'package deal' comes with fast- and slow-fire components. Note how steady the XMG is from the bipod. (File Size: 3.8 MB) Cycle Rates Smaller File (1.5 MB)
(Unless you have a very fast internet connection your media player will not be able to 'stream' the video. You should 'right click' on the link below, save the files to your hard drive, and run them from your hard drive. Also, these videos are in the new .mp4 format. If your player cannot read these files, download the free Quicktime Play from: http://www.apple.com/quicktime/download/ . )5/27/08
308 with M60/M13 links (High Res) 308 with M60/M13 links (Low Res)
XMG 8mm GMBS Shoot 7/08 #2 (20MB)
XMG 8mm GMBS Shoot 7/08 #2 (low res 1MB)
This video shows one of our .308 converted XMGs
Shows XMG 20 round burst of 8mm from prone (side view)
Shows XMG 20 round burst of 8mm from prone (rear view)
From Customers
"I am enjoying my new gun. I have shot it in both the 308 and 8mm configurations without any problems. The 308 was outside, and I shot 8mm indoors. The sparks were flying off the traps!!!! "
"I just received my XMG 34 last week. My six sons and I were able to go to the range on Saturday and we put 42 fifty round belts through the XMG and it ran flawlessly. We had a great time. Thank you very much for delivering an excellent product." - Michael R. L., M.D. in North Carolina 1/9/2006
"HEY BRIAN JUST WANTED TO CHECK IN... MY XMG IS RUNNING FLAWLESS, SEVERAL CASES AMMO DOWNRANGE" TONY H
Matt in OR w/ XMG purchased in 2004 on AA tripod and feeding from basket drum
9/08: For Bruce in NH, one XMG wasn't enough. He also found a way to shoot both at the same time using a modified MG3 double mount.
Mount Options
Modified MG3 AA Mount or any MG34 AA or Vehicle-Mount Post
shown on modified MG-3 Tripod
Some XMG History
4/19/2001 - Flawless performance in a 100 round full auto test, cycle rate 600-700 rpm
Prone test firing on 4/29/2000 with bipod mounted on the forward position.
Broken Down
MG-34 / XMG 308 Conversion ($700 for all parts)
• Newly manufactured barrel with original barrel collar ($465)
• 2 caliber feed tray with removable spacer that can be used for both 8mm & 308. ($150)
• Reduced diameter booster cone ($35)
• Front Feed Pawl that can be used for 8mm & 308 ($30)
• Link guide attached to feed tray ($15)
This setup will enable the MG-34/XMG to use WW2 belts, 308 belts, or M60/M13 links
308 Feed Tray with M13/M60 Link Guide:
How It Works
Once the original feed block is modified to assist 308 feeding, it will continue to function with 8mm as well. At this point, simply switch the quick-detach barrel and feed tray to your desired caliber. Since 308 is a lower-pressure round than 8mm, you may want to replace the 8mm booster with the 308 booster to increase the cyclic rate. Be careful not to use the 308 booster when firing 8mm.
XMG Spare Parts
1) Recuperator / Short-Recoil Piston Spring (new production): $10
2) Bipod (WW2): $125
3) Buffer Springs (bellevilles): $0.50 ea
4) Booster Cone (original or reduced diameter for 308): $35
5) Charging Handle: $20
6) Front AA Post/Sling Swivel: $40
7) Bolt Roller Spring Clip (the part that holds the rollers to the bolt / new production): $8 ea 
8) Bolt Ejector Pin: $25
9) Firing Pin Assembly: $35, $30 for 2 or more
9) Firing Pin Anti-Slam-Fire Spring: $2.50
9) Firing Pin Rear Polyurethane Bumper w/ Washers: $4.00
10) Complete Bolt Assembly: $375
11) Extractor (with spring and plunger) : $35
XMG Transit Chest: $300
Belt Sets
MG34 Gunners' Kit
Each gunners' kit contains; canvas case, oil can, 2 solvent cans, jag, 3 brushes, muzzle wrench, cleaning rod, pull-through, screwdriver, hot-barrel mitt & canvas & metal brass catcher. - $150 - $75 with purchase of XMG or MG34 parts kit
If you would like to come to our facility to see and shoot one of our guns, please call or write to setup an appointment.
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