| Brand |
Model |
Drop In |
Notes |
| Rise Armament |
RA-140 |
Requires Modification |
Cassette must be trimmed for Ejector Lever Pin clearance. |
| Rise Armament |
RA-240 gen 2 |
Yes |
|
| Rise Armament |
RA-535 |
Yes |
|
| Blackout Defense |
ZERO AR15 |
Requires Modification |
Cassette must be trimmed for Ejector Lever Pin clearance.
|
| ALG |
ACT |
Yes |
|
| Timney |
AR15 Competition |
Yes |
|
| Geissele |
SD3G |
Requires Modification |
Hammer needs to be chamfered and polished to extend range of motion. *Longer buffer may be required. |
| Geissele |
SSP |
Requires Modification |
Hammer needs to be chamfered and polished to extend range of motion. *Longer buffer may be required. |
