Sig Sauer Alpha 1" tube LOW Profile Weaver/Picatinny Steel Rifle Scope Mount Rings
Pair - 2 rings supplied
1 inch Tube -
- Ring is 1 inch / 25.4mm diameter.
- To suit scopes with 1 inch / 25.4mm diameter tubes.
Low Profile Height -
- 9mm base to bottom of ring "Saddle"
- Suit scopes with maximum outer case diameter of 42mm - assuming position over a flat flush base - that's approx. a 32mm lens but may vary according to design and use of flip caps etc
- This is down to the user to determine we can only give broad guidelines.
- See scope clearance guide at bottom of page.
Mount Rings Detail
- Twin Torx rail attach screws
- Double torx top plate screws to hold your scope firmly in place
- Designed for Weaver/Picatinny rail fitting
- Solid steel construction for superior strength
- Configuration: 2 Piece
- Ring Size (Diameter): 1 inch / 25.4mm
- Height: High - 9mm saddle / 41mm total height
- Mounting length (each ring) - 16mm
- Rail: Weaver / Picatinny
- Fixings (Rail & Top Cap): Double Torx Screw
- Internal Cushion: NO
- Retractable 'Recoil Stop' Pin: NO - Locking bar
Base fit - Weaver/Picatinny base -
- For base rails that look like the one pictured below. (Base rail NOT included)
- 20-22mm wide with horizontal slots.
- May vary in length and be 2 smaller sections on some rifles.
- If you do not have a base that looks similar to this, and have for example, an 11mm wide dovetail groove then the mounts can only be made to fit by also purchasing an adapter.
- Please ask us if unsure.
Calculating scope to rifle body clearance
The way you calculate the clearance is by halving the overall OUTSIDE diameter of your rifle scopes objective lens and then deducting half the rifle scopes body tube diameter.
For scopes with a 1" diameter body tube diameter this would mean deducting 12.7mm and 15mm for scopes with a 30mm diameter body tube.
Note we say OUTSIDE diameter - this means NOT the lens diameter, you need to measure the whole outer casing diameter.
The result gives you the minimum "saddle" dimension required - the measure from base of mount to bottom of the ring.
The amount the saddle dimension is greater than the figure you have calculated is the amount of clearance your scopes objective will be clear of your rifles body. The saddle on these mounts is 9mm
- A scope is measured and found to have an outer case measurement of 40mm.
- 40 divided by 2 = 20
- 1" scope so 20 minus 12.5mm = 7.5mm
- So the mount must have a measure (bottom of mount to bottom of the ring) greater than 7.5mm or else it will ground out on the rifle body.
- This mount being 9mm has just about perfect clearance.
- If it is 42mm outer then the clearance is 0.5mm
Calculating your rifle scopes clearance in this way does assume the base is basic flat, not raised above or below your rifles barrel. Note some rifles with high or adjustable cheek pieces may require higher scope mounts or risers so that your eye is in line with the rifle scope and your head is kept in an upright comfortable position.