C-MAG MAGAZINE SYSTEM 7.62MM AR-10A - BETA MAG C

USER MANUALC-MAG MAGAZINESYSTEM 7.62MMAR-10A

CONTENTSPagesIntroduction2, 3Technical Data4Description5, 6Drawing: Exploded View7Loading / Lubrication8, 9Use of Personal Loader10Precautionary Measures - Sand11Disassembly and Cleaning12 - 15Assembly of the C-MAG16 - 19Troubleshooting20, 21Accessories22, 23C-MAG MAGAZINE SYSTEM AR-10A24List of Part Numbers251

INTRODUCTIONThe C-MAG Magazine AR-10A is a 100 round ammunition magazine, manufactured to the highestproduction standards. It meets and exceeds NATOMilitary Specifications.The patented design provides for equal distributionof the ammunition in each of the twin-drums.Rounds are fed alternately from each drum throughthe feed clip into the weapon, resulting in a fixedcenter of gravity during firing. Using a unique rotation device and low torsion stress springs, the CMAG is the world’s first magazine with a full 100round capacity, capable of being pre-loaded andstored indefinitely. The compact design allows forbetter ground clearance and stability.The C-MAG AR-10A is installed in the weapon likethe standard issue magazine with the bolt in theopen position. The bolt will be in the closed position when the magazine is empty.2

The C-MAG can be reloaded and reused repeatedlywith an estimated life cycle in excess of 60,000rounds.The C-MAG AR-10A is compatible with thefollowing weapons: DPMS, KAC SR-25, LWRC REPR,LARUE OBR, Bushmaster .308 ORC, Remington R25, POF P-308, JP Enterprises LRP-07, LES BAER .308,COLT LE 901-165, Armalite AR10-A, S&W M&P 10,SIG 716 DMR and other rifles that use theSR25/M110 pattern magazines.3

C-MAG 7.62MMTechnical DataAMMUNITION:NATO standard 7.62 x 51mm .308 caliberCAPACITY: Variable, 1 to 100 roundsFEED RATE:Variable, up to 1,000 rounds per minuteDIMENSIONS:13.1 x 5.6 x 3.8 inches333 x 142 x 96.5mmWEIGHT: Empty: 5.0 lbs / 2.2 kgSTORAGE LOADED: IndefiniteMATERIALS:Main Components: Filled thermoplasticMinor Components: Non-corrosive steel; alloy4

DESCRIPTIONThe C-MAG magazine 7.62mm consists of twomain component assemblies: Double Drum Housing Feed Clip Assembly.Feed Clip Assembly AR-10ADouble Drum Housing5

The double drum housing comprises of: Double drum, Drive gear assemblies with pusher arms, Set of covers.The housing acts as storage facility for theammunition.The Feed Clip is filled with Two Strings of LinkedSpacer Rounds: 9-RD Linked Spacer Rd String (flat end) 9-RD Linked Spacer Rd String (tapered end)which occupy the feed clip when the magazine isempty. They are an integral part of the magazineassembly.The tapered end of the string set is positioned atthe open end of the feed clip when the magazineis empty and allows the weapon bolt to close afterthe last round has been fired.WARNING: Do not remove the LinkedSpacer Round Strings !!The bolt will stop in the closed position.6

C-MAGAR-10A7

LOADING / LUBRICATION The C-MAG loads and functions like astandard issue magazine. Live cartridges are loaded by pressingthem into the feed clip (on top of thespacer rounds). Cartridges will feed alternately into each drum. The springs aretensioned during the process without theneed for any supplementary operations. The magazine does not need to be emptyto be loaded and remains completely operational at all times. Load with the Personal Loader. Regularly Add Graphite (dry lubricant).Do not use Oil!8

C-MAG Loading ActionRounds on the left side of the feed clipare loaded into the left drum and roundson the right side of the feed clip areloaded into the right drum.9

Use of the Personal LoaderThe Personal Loader uses loose or bulkammunition. It consists of two parts: HousingFits over the feed clip ofthe C-MAG. PlungerRaise the plunger andinsert 5 rounds into theside opening of thehousing, depress plungerto load the rounds intothe C-MAG.DO NOT FORCE LOADING!If extra force is required, STOP: Unload several rounds, push down to checkrounds for free movement and reload. If rounds do not move freely and come up to thetop of the feed clip, disassemble magazine andinspect.10

CAUTIONPRECAUTIONARY MEASURESFOR USE IN SAND ENVIRONMENT Keep BOLT CLOSED when C-MAG isin the weapon. Keep DUST COVER on the feed clipwhenever C-MAG IS NOT in theweapon. Keep C-MAG in Carrying Pouchwhen not in use.11

DISASSEMBLY OF THE C-MAG1.DISASSEMBLY FOR CLEANINGTake the empty C-MAG and1.1.Remove Clip Assembly1.1.aRemove clip screws, first front screw(drum side), than back screw (coverside).Turn C-MAG over and remove clip strapand feed clip assembly.Remove Linked Spacer Round StringSet from feed clip.1.1.b1.1.c1.2.Remove Cover SetWARNING: Do not disassemble any further.1.3.CleaningClean drum assembly, covers, feed clipand linked string sets as recommendedon next page.12

CONTAMINATION & ACTIONHARSH SAND, DIRT ETC.:Use cloth, compressed air or flush with water.FINE SAND, SILT, MUD ETC.:Soak in water with detergent (optional) to saturateand dissolve deposits. Flush with clean water.OILS, GREASE, RESIDUES FROM SOLVENTS ORFUELS:Use acetone or alcohol. Do not use oily fuels suchas diesel, mineral spirits or kerosene. Follow upwith detergent and water.SALT DEPOSITS FROM SEAWATER:Light deposits: Soak in water to dissolve.Heavy deposits: Return to manufacturer.CLEANING CLEAR COVERS:DO NOT use any type of solvent on clear covers.Clear Covers will turn cloudy! Clean with water, soapor detergent.13

CAUTION2.DISASSEMBLY FOR CLEARING OFBLOCKAGES2.1.Remove Clip AssemblyHOLD DOWN clip assembly while removing screws and clip strap. Removefront screw first (drum side).Point C-MAG away from you.Removing the clip strap may releaseblockage. Cartridges may be forced outof the drum housing through the clipopening. Point away from you and control release of rounds by holding downclip.2.2.Remove Cover Set.Put C-MAG in container to avoid uncontrolled release of rounds. Point awayfrom you!14

2.2.a2.2.bCarefully remove screws and removecover. Grasp and slowly rotate drivegear to dislodge ammunition. Shakedrum assembly if necessary. Do notallow drive mechanism to snap backinto place.Check for damaged parts.2.3.RepairsMagazines with obvious and serious damageto the drum assembly cannot be field repairedand must be returned to the manufacturer forrepair.Removable components are available as spareparts for field replacement.C-MAG products can be returned to themanufacturer for warranty or post warrantywork at any time.THE BETA COMPANY2137B Flintstone Drive, Tucker, GA 30084, USA1-800-669-2382, www.betaco.com15

ASSEMBLY OF THE C-MAG1.InspectionAll parts of the C-MAG should be inspectedfor function or damage prior to assembling.Drive gears in the double drum housing mustrotate freely.2.Attach coversPlace covers on drum assembly and attach.Covers are designed for a tight fit.16

3. Attach feed clip assembly3.1.Load feed clipThe feed clip holds two Linked-SpacerRound-Strings. INVERT feed clip, legs pointing up. Align string sets vertically and nesttogether.17

Lower assembled string set intofeed clip.CAUTION:TAPERED Round (circled) MUST be at the open endof the feed clip. The string set assembly must beinstalled vertically as shown.DO NOT place linked string sets on topof each other. C-MAG will not load.18

3.2.Attach feed clip to drum housing Invert double drum housing and feedclip assembly. Slide feed clip assemblyon to drum housing.Add clip strap, attach back screw (overcovers) first.Turn around holding down feed clipassembly and attach screws. Assemblyis complete.Depress spacer rounds to check forfree movement.Add graphite to top of string sets forlubrication. 19

TROUBLESHOOTINGCharacteristicCause / RemedyDoes not load.Linked Spacer Round String Set is installed incorrectly.Loading is very difficult.Dirty magazine.Round missed staggerWill feed and fire if it loaded easily. Ifloading required extra force, unload andload again.One side of feed clip shows live rounds,other side spacer round string.One drum hesitated feeding; sign of dirtymagazine.Weapon bolt drives spacer round stringinto front of feed clip.Linked Spacer Rounds are installed incorrectly. Tapered round MUST be at topopening of the feed clip.20

TROUBLESHOOTINGCharacteristicCauseLinked assembly drags in feed clip.Linked assemblies have become lengthened. May be pushed back together andre-used or exchanged.Magazine falls out of weapon.Magazine is not fully seated in weapon.Weapon fires several rounds, then jams.Magazine feeds well by hand when out ofthe weapon.Check for secure attachment between thefeed clip and drum assembly.C-MAG rattles when empty or full.This is normal.21

ACCESSORIES1.1.Personal Loader (see Page 10)1.2.Pouch1.2.a the pouch is designed to hold 1 C-MAG Magazine1 Loader2 Graphite Tubes1 User Manual22

PouchSee website @ www.betaco.com23

C-MAG MAGAZINE SYSTEM AR-10AIncludes the following components:1 each C-MAG Magazine AR-10A1 each Personal Loader AR-10A1 each Pouch, Color: Black1 each User Manual AR-10A2 each Graphite Tubes24

LIST OF PART NUMBERSPart No.DescriptionM7PM021 C-MAG SYSTEM AR-10A(clear covers)C7PM020C-MAG Magazine AR-10A(clear covers)LPM705PM1706Personal LoaderPouch blackA7PM03S7M102CLS7M160X7PMTEMXXXGT1Feed Clip Kit AR-10ADrum Back Cover Set clear 7.62Dust Cover 7.62User Manual AR-10AGraphite Tube25

For further information contact:THE BETA COMPANY2137B Flintstone Drive, Tucker, Georgia 30084, USAPhone: 770 270 0773 OR 1 800 669 2382Fax: 770 270 0599Internet: www.betaco.comX7PMTEM, Rev.0

LARUE OBR, Bushmaster .308 ORC, Remington R-25, POF P-308, JP Enterprises LRP-07, LES BAER .308, COLT LE 901-165, Armalite AR10-A, S&W M&P 10, SIG 716 DMR and other rifles that use the SR25/M110 pattern magazines.