| Caliber |
9mm / .40 S&W |
9mm / .40 S&W |
.45 ACP |
9mm |
| Magazine Type |
Glock |
S&W M&P / Sig P320 & P250 |
S&W M&P (.45 only) |
Beretta 92 |
| Last Round Hold Open |
✅ |
✅ |
✅ |
✅ |
| Compatible with Mil-Spec AR-15 Lower |
✅ |
✅ |
✅ |
✅ |
| Bolt Compatibility |
Glock Cut Bolt |
Glock Cut Bolt |
Glock Cut Bolt |
Glock Cut Bolt |
| Buffer Requirement |
5.4 oz or heavier (carbine spring) |
5.4 oz or heavier (carbine spring) |
11 oz or heavier (carbine spring) |
5.4 oz or heavier (carbine spring) |
| Feed Ramp |
4140 NiB Coated |
4140 NiB Coated |
4140 NiB Coated |
4140 NiB Coated |
| Material |
6061 T6 Aluminum |
6061 T6 Aluminum |
6061 T6 Aluminum |
6061 T6 Aluminum |
| Finish |
Type III Hard Coat Anodized |
Type III Hard Coat Anodized |
Type III Hard Coat Anodized |
Type III Hard Coat Anodized |
| Made in the U.S.A. |
✅ |
✅ |
✅ |
✅ |
| Special Notes |
Most versatile |
Sig 30-rd mag not compatible |
Requires enlarged .45ACP ejection port |
Only works with Beretta mags |