Dealer Login:

Click Here to Become a Dealer

RSR Part #: ANGAA1045LRBA Manufacturer Part #: AA1045LRBA

View High Resolution Image
View High Resolution Image
View High Resolution Image

Angstadt Arms, 1045 Lower, Semi-automatic, 45ACP/ 10MM, Stripped Lower, Black Finish


WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

• Accepts 45acp and 10mm GLOCK® magazines
• Last round bolt hold open on an empty magazine
• Flared magwell for faster reloads
• Integrated, oversized trigger guard
• Machined from 7075-T6 billet aluminum with a matte black hard-coat anodized finish
• Threaded bolt catch screw

Product Description

The Angstadt Arms 1045 lower receiver set is the foundation of a quality pistol caliber AR-15. Machined from a solid block of 7075-T6 billet aluminum, the 1045 lower receiver is compatible with 45acp and 10mm GLOCK® magazines. Featuring standard AR-15 controls and accepting most aftermarket Mil-Spec components, the 1045 is instantly familiar to anyone experienced with the AR-15/M4 platform. To aid in reloads, the receiver features a flared magazine well and last round bolt hold open design which locks the bolt open on an empty magazine. The lower receiver can be completed with standard mil-spec components.