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SKU: 430106494
This stock kit is built for shooters who want a complete, mil-spec diameter setup with the Mod 2 stock, MK2 receiver extension, spring, buffer, end plate, and locking nut included. The configuration is suited to carbine builds where a slightly longer receiver extension and an 8-position adjustment range are useful for dialing in fit. BCM describes the Mod 2 stock as an upgrade over the baseline M4 accessory, with enhanced ergonomics and durability. It is a straightforward option for hunters and rifle owners assembling a dependable, purpose-driven rifle setup.
Complete Stock
Kit includes receiver extension, spring,
Mil-spec Diameter,
Eight-position receiver extension supports adjustable
Mk2 Receiver
Extension is approximately 3/4 inch
Epm4 End
Plate includes a mount for
Mod 2
Stock is described as offering
| Action Spring | Mil-Spec M16A4 Rifle Action Spring |
|---|---|
| Buffer | BCM MK2 Mod 1 - T0 Buffer |
| Buffer Weight | approximately 3.8oz |
| Country Of Origin | Hartland, WI |
| Durability | next-level durability |
| End Plate | BCM EPM4 End Plate |
| End Plate Feature | include mount for QD swivel |
| Ergonomics | enhanced ergonomics |
| Locking Nut | Locking Nut (Castle Nut) M4 |
| Patent Number | D901616 |
| Receiver Extension | BCM MK2 Receiver Extension |
| Receiver Extension Diameter | Mil-Spec diameter |
| Receiver Extension Length | approximately 3/4" longer than carbine |
| Receiver Extension Material | 7076T6 |
| Receiver Extension Positions | 8 position |
| Stock Included | BCM Stock Mod 2 - Black |
The kit includes the BCM Stock Mod 2 in black, BCM MK2 Receiver Extension, Mil-Spec M16A4 Rifle Action Spring, BCM MK2 Mod 1 - T0 Buffer, BCM EPM4 End Plate with mount for a QD swivel, and a Locking Nut (Castle Nut) M4.
Yes. The BCM MK2 Receiver Extension is listed as Mil-Spec diameter.
The BCM MK2 Receiver Extension is listed as 8 position.
Yes. The BCM EPM4 End Plate includes a mount for a QD swivel.
The description says the BCM Mod 2 stock is an improvement over the baseline M4 accessory, with enhanced ergonomics and next-level durability. It is also described as recontoured into a patented semi-club shape.