AeroPrecision145478624
Aero Precision M4E1 Apar600002C Lower Strp Fde$159.99
Availability: In Stock
Current Stock: Out of stock
The Aero Precision M4E1 lower receiver delivers precision engineering without the precision price tag. This AR15 lower receiver starts with 7075-T6 forged aluminum—the same material used in aircraft—then gets machined to accept standard mil-spec parts. The result is a platform that looks like a high-end billet lower but builds like a dream for home gunsmiths and gunslingers alike. Whether you're assembling your first AR or your tenth, the M4E1 removes the friction from the build process with thoughtful design touches that save your knuckles and your sanity.
Aero engineered several features into this lower that set it apart from generic forgings. The threaded bolt catch roll pin (included) means you can install the bolt catch without the usual wrestling match or the risk of marring the anodize. An integrated trigger guard eliminates those fragile tabs that break under assembly pressure—this design builds strength into the platform itself. The upper tension screw in the grip tang lets you dial in the fit between upper and lower receiver for a custom feel without custom work. And the threaded takedown pin detent recess (4-40) finally solves the age-old problem of launching tiny springs across the garage.
The magwell flare is noticeably increased for faster, more reliable magazine changes under pressure. The receiver is marked "Cal Multi" and "M4-" with a serial number designation. It's milled and marked for short-throw safety selectors but will function perfectly with any standard AR15 safety. At 8.61 ounces, it's built solid without excess weight.
| Brand | Aero Precision |
| Product Type | AR15 Lower Receiver |
| Material | 7075-T6 Forged Aluminum |
| Finish | Anodized Black |
| Weight | 8.61 oz |
| Platform Compatibility | AR15 (mil-spec) |
| Takedown Pin Detent | Threaded for 4-40 set screw |
| Markings | Cal Multi, M4-, Serial Number Designation |
| Included | Threaded Bolt Catch Roll Pin |
The M4E1 is designed to work with all standard mil-spec AR15 parts and magazines. It's a fully compatible platform for your build or upper assembly.
Yes. Aero designed the M4E1 specifically to simplify the assembly process. The threaded bolt catch pin, integrated trigger guard, upper tension screw, and threaded detent recess all reduce common assembly headaches and the risk of damage during build-out.
The threaded bolt catch roll pin comes included. You'll need a 1/16" hex key for assembly and a 4-40 set screw for the takedown pin detent recess.
Yes. The M4E1 is milled and marked to accept short-throw safety selectors, but standard selectors will work perfectly as well.
SKU: 145478625 • Weight: 0.7oz
Availability: In Stock
Current Stock: Out of stock
The Aero Precision M4E1 lower receiver delivers precision engineering without the precision price tag. This AR15 lower receiver starts with 7075-T6 forged aluminum—the same material used in aircraft—then gets machined to accept standard mil-spec parts. The result is a platform that looks like a high-end billet lower but builds like a dream for home gunsmiths and gunslingers alike. Whether you're assembling your first AR or your tenth, the M4E1 removes the friction from the build process with thoughtful design touches that save your knuckles and your sanity.
Aero engineered several features into this lower that set it apart from generic forgings. The threaded bolt catch roll pin (included) means you can install the bolt catch without the usual wrestling match or the risk of marring the anodize. An integrated trigger guard eliminates those fragile tabs that break under assembly pressure—this design builds strength into the platform itself. The upper tension screw in the grip tang lets you dial in the fit between upper and lower receiver for a custom feel without custom work. And the threaded takedown pin detent recess (4-40) finally solves the age-old problem of launching tiny springs across the garage.
The magwell flare is noticeably increased for faster, more reliable magazine changes under pressure. The receiver is marked "Cal Multi" and "M4-" with a serial number designation. It's milled and marked for short-throw safety selectors but will function perfectly with any standard AR15 safety. At 8.61 ounces, it's built solid without excess weight.
| Brand | Aero Precision |
| Product Type | AR15 Lower Receiver |
| Material | 7075-T6 Forged Aluminum |
| Finish | Anodized Black |
| Weight | 8.61 oz |
| Platform Compatibility | AR15 (mil-spec) |
| Takedown Pin Detent | Threaded for 4-40 set screw |
| Markings | Cal Multi, M4-, Serial Number Designation |
| Included | Threaded Bolt Catch Roll Pin |
The M4E1 is designed to work with all standard mil-spec AR15 parts and magazines. It's a fully compatible platform for your build or upper assembly.
Yes. Aero designed the M4E1 specifically to simplify the assembly process. The threaded bolt catch pin, integrated trigger guard, upper tension screw, and threaded detent recess all reduce common assembly headaches and the risk of damage during build-out.
The threaded bolt catch roll pin comes included. You'll need a 1/16" hex key for assembly and a 4-40 set screw for the takedown pin detent recess.
Yes. The M4E1 is milled and marked to accept short-throw safety selectors, but standard selectors will work perfectly as well.
SKU: 145478625 • Weight: 0.7oz