Jennings Machine and Tool
Sight Pushers
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Pin Sets
Government size 1911 front sight adapter
Government size 1911 front sight adapter
This adapter is necessary to properly align the front sight on 5" 1911's. Not necessary on shorter 1911's. it installs in place of the rotating flange nut. THIS ADAPTER IS ONLY USED WITH THE MK V TOOL. The Mk lll does not need it.
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Glock Specific Jackscrew Set
Glock Specific Jackscrew Set
A new jackscrew adapter which features a 60* angled surface and a 90* square surface. It is sized to fit the Glock dovetail dimension. This adapter will work with both angled sights and replacement sights with a square edge. The jackscrew and pins are similar to the front sight set. It is provided with a jackscrew and two different length pins.
3/16" square adapter set
3/16" square adapter set
This set is designed to fit S&W front sights, as well as others that are too small to use the regular square adapters. The set contains a dedicated jackscrew, square adapter and two different length pins.The 1-1/4" pin has been deleted due to a propensity for breakage and possibly being a safety hazard. This adapter will work with any of the JMT products that utilize a 3/8-16 jackscrew.
Lock Plugs
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Jackscrew Sets

Spare Jackscrew Set
Ordered with Pusher
Spare Jackscrew Set
Ordered with Pusher
Select when ordering with a pusher
Spare Jackscrew set ordered separately
Spare Jackscrew set ordered separately
Select if ordering spare jackscrew set without s pusher.


International Shipping
International Shipping
Shipping to most of Europe and Australia is $38. Select this option which is the difference in regular shipping and international shipping.