If you’re looking for an stripped upper for your AR-15, be sure to check out GIBBZ Sidecharge Uppers.  The GIBBZ Arms G4 side charging upper receiver is a non-reciprocating upper receiver that uses most standard AR-15/M16 bolt carrier group.  They are perfect for short barrel rifles (SBRs) and AR-15 pistols.  We personally run them on you AR-15 in 9mm and 45ACP pistol and wouldn’t have it any other way.  Check our Instagram page, @gorilla_arms_llc to see pictures of them on completed builds.

Brief Product Description:

  • Enlarged Ejection Port for the 458 SOCOM / 45ACP
  • Available in left and right side charge
  • Non-reciprocating with detent to keep the charging handle forward during operation
  • Uses all Mil-Spec and most Custom Bolt Carriers without modification
  • Bolt carrier door in the rear to allow for easy bolt carrier removal and gasses in during operation (important for suppressed fire)
  • Included is our Enhanced cam-pin optimized for our side charge upper with Melonite coating
  • Manufactured in the USA (Arizona) by GIBBZ Arms
  • Weight: 13.0 oz.
  • Dimensions: 8.9 x 2.9 x 2.9 in
  • IMPORTANT!! You must use the G4 Enhanced Cam Pin in the G4 Side Charging Uppers on standard AR-15s!
  • Cam Pin swap is not needed for pistol caliber rifles.
  • * Upper not compatible with hand guards with anti-rotation tabs without modification *

Check our selection of GIBBZ Sidecharge Uppers and other upper receivers that are available.  Message me if you have any questions!

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