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LAGE MFG MAX-31A mk2 Owner's Manual - Cocking

Manual is about: Upper Receiver

Summary of MAX-31A mk2

  • Page 1

    Owners manual max-31a mk2 upper receiver lage manufacturing, l.L.C. 916 e. Baseline rd. Mesa az 85204 cm11-420, rev.-.

  • Page 2

    Nfa warning this upper receiver is designed to be used with the swd m-11a1 and rpb m-11a1 .380 acp submachine gun. Nfa (national firearms act, title 26, united states code) rules apply to its use and possession. It is the owners/users responsibility to comply with all local, state and federal laws a...

  • Page 3: Description/features

    1 5 6 4 2 7 9 3 description/features features: length: 20-3/4” width: 2-1/4" height: 4-3/4” overall length with 8-1/2" stock- 28" weight: 3 pounds 11.7 ounces 1) scope/optics rail 16" 2) cocking handle (non-reciprocating) 3) lower accessory rail 5-1/4" 4) side accessory rail mounting points 5) 8-3/8...

  • Page 4: Installation

    Installation 1 2 3 insure firearm is unloaded. Point in a safe direction. Remove magazine and pull bolt to the rear to insure chamber is empty. While holding cocking knob, pull trigger and ease bolt forward into closed position. Remove front pushpin and detach upper receiver from lower receiver..

  • Page 5

    5 align retaining pin hole and install retaining pin. 6 make sure selector is set to "smg". This drops the trip down and makes it easier to install the upper. Hold upper receiver with muzzle pointing down to prevent bolt assembly from sliding out. Pull and hold trigger back while installing the uppe...

  • Page 6: Operation

    Operation use only full power 9mm ammunition such as winchester white box 115 gr. Round nose ammunition. Using weak ammo will result in short uncontrolled bursts of 3 to 5 rounds. If you are unsure of your ammunition, only load 10 rounds in the magazine and test to see if it continues to shoot after...

  • Page 7: Load Magazine:

    Extra magazines can be purchased from: vegas drums 702-763-1269 sales 702-706-4gun information vegasdrums31@gmail.Com centerfire systems 102 fieldview dr. Versailles, ky 40383 www.Centerfiresystems.Com 1-800-950-1231 due to vartiations in magazines, some magazines may be a snug fit but most will fit...

  • Page 8: Cocking

    Note: cocking assembly may slightly bind when first used. With use and lubrication, it will feel smoother. If gun jams with the bolt forced closed, do not force the cocking knob or hit it with a hammer. Remove upper receiver from lower receiver. Use a screw driver to to depress the rear of the extra...

  • Page 9: Scope/optics Rail

    A full length rail for mounting a scope or other aiming device is located on the top of the upper receiver. The rail profile is compatible with most scope mounts, however, square shaped recoil lugs may not work. These are typically found on quick detach, throw lever mounts such as larue tactical mou...

  • Page 10

    The max-31a mk2 can be fitted with left and right side accessory rails for mounting additional accessories. They are installed by using the threaded holes on the sidesof the foregrip. Screw threads are #10-32. When installing the screws, use loctite 242 on the threads and be careful not to overtight...

  • Page 11: Removal Of Barrel

    The barrel has been designed to allow easy removal and installation. There are ¾" wrench flats at the muzzle end. To prevent marring the finish of the upper receiver use a padded vise or hard wood inserts. Clamp the front sides of the upper behind the front cover mounting screws. Using a 3/4" open e...

  • Page 12

    And remove the barrel. The trunnion will come loose after removal of the barrel. To prevent loss or misplacement of the trunnion, insert a 10-32 screw into the accessory rail hole to keep trunnion in place after the barrel has been loosened and removed from the vice. To re-install barrel, replace tr...

  • Page 13

    Note:the max-31a mk2 upper receiver halves are secured together with screws.These are not intended to be removed for routine maintenance and cleaning. Cleaning and lubrication should be carried out per the original manual provided with the m-11a1 with the follow- ing additional requirements: recomme...

  • Page 14

    Surface is worn and preventing the sear from reliably engaging, discontinue use and have it repaired immedi- ately. Lightly coat ejector rod with gun oil. Insert the bolt assembly into the upper receiver. Re-install upper receiver on to lower receiver..

  • Page 15: Parts Replacement

    The max-31a mk2 slowfire upper receiver uses some parts that are common to the original m-11a1. All replacement parts can be purchased from lage manufacturing, l.L.C. Additionally, you can purchase the following parts from any company that sells parts for the m-11a1: parts replacement buffer back pl...

  • Page 16: Warranty And Repair

    Warranty and repair warranty note: use of reloaded/remanufactured ammunition or aluminum cased ammunition will void your warranty the max-31a mk2 slowfire upper receiver has been manufactured in a manner to insure it is defect free and durable. Lage manufacturing, l.L.C. Warrants to the original pur...