Glock Compatible Last Round Bolt Hold Open Upper Receiver
With the debut of Aero Precision’s EPC-9 lower receiver, comes the perfect match of an upper receiver. This upper mates perfectly with the EPC-9 lower, preserving the billet-style angles and contours while still being made of forged 7075-T6 aluminum. It looks great, and comes in your choice of matte black anodizing, or a Magpul FDE Cerakote finish.
This upper can be used with most standard AR-15 handguards, and any Glock-compatible Bolt Carrier Group for 9mm or .40 S&W. The Last Round Bolt Hold Open device also ensures that you won’t have to adjust from using your AR-15. No need to rack your charging handle after the last round in your magazine has fired.
What is LRBHO and how does it work?
If you’re used to an AR-15, you might take this feature for granted. Last Round Bolt Hold Open means that when you’re out of rounds, the bolt holds the action open. When this happens, you insert a new magazine, push the bolt release, chamber a round, and keep firing. All of this functionality is contained within the lower receiver on a standard AR-15.
But switching to Glock magazines requires a little workaround, since the bolt catch cannot be engaged by a Glock magazine by default. Aero Precision solved this issue with the LRBHO device integrated into this upper receiver. A steel bar engages with a Glock follower after the last round is fired, which then pushes bolt catch in your lower, and allows your bolt to hold back.
Whether you have a dedicated pistol caliber lower are using a conversion block, this upper will enable you to use LRBHO on your blowback 9mm or .40 S&W rifle.
NOTE: The EPC last round bolt hold open is ONLY compatible with appropriate Glock pattern magazines.
Features
- Last round bolt hold open mechanism
- Accepts most AR15 compatible barrel nuts and handguards
- Dimple above threads to allow for proper handguard timing
- Standard AR15 takedown/pivot pin lug pattern
- Machined from custom forged 7075-T6 aluminum
- Laser engraved T-marks
- Pre-installed last round bolt hold open assembly
Specifications
- Material: 7075 T-6 Aluminum
- Finish: Anodized Black or FDE Cerakote
- Platform: EPC-9
- Weight: 7 oz.
DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.
Products available on this page:
- Aero Precision EPC-9 Threaded AR-15 Upper Receiver w/ LRBHO for Glock Magazines - Black - Color: Black | SKU: APAR620201AC | UPC: 840014611782
- Aero Precision EPC-9 Threaded AR-15 Upper Receiver w/ LRBHO for Glock Magazines - Flat Dark Earth - Color: Flat Dark Earth | SKU: APAR620202AC | UPC: 840014611799
