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Spartan 9MM/45ACP Non-Reciprocating Side Charge Billet Upper Receiver w/ LRBHO
Spartan 9MM/45ACP Non-Reciprocating Side Charge Billet Upper Receiver w/ LRBHO

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MSRP: $299.95
Sale Price: $234.95
JoeBob dun saved you $65.00!

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Spartan 9MM/45ACP Billet Side Charging AR15 Upper Receiver w/ Last Round Bolt Hold Open (LRBHO)

Side-Charge upper receivers may require modification of anti-rotation tabs on certain handguards. Install and modifications should be done by a qualified gunsmith.

  • Machined from 6061 billet aluminum
  • Matte black hard-coat anodized per Mil 8625 Type 3 Class 2
  • Compatible with all standard AR-9 components (Glock pattern) and most aftermarket parts Machined pocket to accommodate Magpul BAD Lever
  • Adjustable tension slide lock on charging handle
  • Rear dust cover trap door that seals shut when mated with lower
  • Manufactured to MILSPEC on state of the art CNC equipment for consistent quality parts and exacting tolerances
  • Save money by building your own AR pistol caliber rifle from the ground up exactly the way you want it configured
  • Contains integrated Last Round Bolt Hold Open (LRBHO) technology (PATENT PENDING) that reliably holds the bolt open when magazine is empty
  • LRBHO feature is designed for lowers that accept Glock style magazines

Once assembled the small "hook" end of the wire form in the upper should be pushed up by the follower of an empty Glock magazine which will engage the bolt catch on the last round fired to hold the bolt in the locked position. If it does not engage, or engages before the last round is fired you can make VERY SMALL adjustments by SLIGHTLY bending the "hook" end down to lock faster or up to lock slower. They are set and function checked during assembly with brand new Glock magazines and our standard bolt catches. Because of varying magazine specs, magazine specs changing over the life of the product, different thicknesses of the pad on the bolt catch and other variables, this adjustment may be necessary with your specific parts. If you are using Magpul PMAG Glock Magazines you will likely need to bend the LRBHO spring down to engage the follower correctly.

*Spare charging handle parts can be found here.

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