Macon Armory

Rudy Koester got his first rifle at 8, a pistol at 10, and a lathe at 12. By 16 he'd built his first 1911 in .45 ACP. After Army service as a champion marksman and M16 instructor, he started building AR-15s from parts as a hobby. In 2005, he fired a 9mm blowback AR and hated it—burnt powder in his face, unacceptable recoil. That frustration led to six years of development on a gas-operated, locked-breech AR-45 prototype. Macon Armory incorporated in 2013 and has been manufacturing precision pistol-caliber conversions ever since.

Most pistol-caliber AR conversions are blowback. The AR-45 is gas-operated direct impingement—and it's the only one like it on the market.

Key advantages: - Runs cleaner than blowback systems (no powder residue in your face) - Eliminates out-of-battery discharge risk (a real hazard with blowback) - Superior recoil control and accuracy - 90% parts commonality with standard AR-15 platforms - Reliable .45 ACP ballistics in a rifle platform

The .45 ACP cartridge offers low noise signature and controlled power—serious enough for law enforcement, but prevents over-penetration in urban environments. It's why tactical teams and home defense shooters trust it.

The complete kit includes the upper receiver, .45 ACP magazines, magazine well adapter, and everything you need. If you own an AR-15 lower, you're halfway there—just swap the upper and insert the adapter.

Hand-guard compatibility: The proprietary gas system limits some options. Call before ordering custom builds—they'll work with you on what's possible.

Left-handed uppers: Available as custom jobs. Call or email to discuss.

Magazine options: Standard .45 ACP magazines, plus partnerships with Green Swamp Tactical for large-frame Glock lower receivers engineered specifically for AR-45 platforms.

PCC Repair & Upgrade Parts: - 9mm Guaranteed to Feed barrels ($129.99–$179.99) - 9mm Extended "Deadblow" Buffer ($49.99) - 9mm Glock Cut Ramped Blowback Bolt ($169.99) - AR-45 Extended Length Heavy Buffer ($59.99) - Aero EPC Mag catch upgrade ($29.95) - Forward Assist Inert Plug ($9.99) - Shadow Ops Suppressor pistons ($64.99)

Military & Law Enforcement: Active and retired personnel get volume pricing. Email with subject line "MIL/LEO DISCOUNT" and include your name, service branch/agency, and dates. You'll get a discount code immediately.

Limited Lifetime Warranty: All Macon Armory-manufactured items covered against workmanship defects. Owner damage from improper use is excluded.

If you have an AR-15 lower, the process is simple: 1. Order the complete upper receiver conversion kit or build your own blowback upper 2. Add the .45 ACP magazine well adapter kit ($389.99) 3. Install the adapter (takes under 60 seconds, no lower modifications needed) 4. Drop in Macon Armory .45 ACP magazines 5. Attach the upper to your lower receiver

Reversing it puts your AR-15 back to stock. Zero permanent modifications.

Located in Macon, Georgia 2970 McManus Rd., Macon, GA 31220 478.474.2990 [email protected]

"Our unique design runs cleaner than previous blowback conversions, eliminates the possibility of out of battery discharge, and provides unparalleled controllability and recoil reduction." — Macon Armory

Call or email for custom builds, left-handed options, handguard compatibility questions, or military/law enforcement discount codes.