M6 bolt knob adapter

M6 Metric Thread Adapter

Allows our 5/16"x24 UNF bolt knobs to be fitted any of the following rifles, which all have an M6 x 1mm thread on their bolt handles.

Rifles with this thread include but are not limited to:

Accuracy International AE
Accuracy International AT
Accuracy International ATX
Accuracy International AW
Accuracy International AXMC
Accuracy International AXSR
Beretta BRX1
Bergara B-14
Bergara BMR
Blaser R8
Blaser R93
Browning Maral
Chapuis Rols
CZ 455
CZ 457
CZ 550
CZ 557
Desert Tech SRS (all variants)

Haenel Jaeger (all variants)

Lithgow LA101
Lithgow LA102

Lithgow LA105
Mauser M12
Mauser M18

Mauser M25
Merkel Helix
Sauer 100
Sauer 101

Sauer 202

Sauer 404

Sauer 505
SIG Sauer 200 STR
SIG Sauer SSG 3000

This thread adapter has an internal M6 x 1mm thread and an external 5/16 x 24 UNF thread which is used with nearly aftermarket bolt knob common in North America. The M6 x 1.0mm threaded bolt handles are common with many European rifle makes and aftermarket options for knobs for these are limited.

$15 for a set of 3 adapters

CNC machined from brass, this adapter won't corrode and is softer than the bolt handle steel or knob you will fit for ease of future removal. If a thread locking compound is used, we don't recommend attaching the adapter to the handle, rather epoxy the adapter to the knob.

Note

Check first that the bolt knob that you intend to fit the adapter to has sufficient threaded length (the adapter is 0.6" / 15mm long). If necessary, the adapter can be shortened and threads cleaned up to fit. All our carbon fiber knobs will fit this adapter without modification.