Weaver Grand Slam Steel Top Mount Base - #S402 (Matte Black)

Weaver Grand Slam Steel Top Mount Base - #S402 (Matte Black)

Weaver Grand Slam Steel Top Mount Base - #S402 (Matte Black)

B&H # WEGSS4022P MFR # 48247
Weaver Grand Slam Steel Top Mount Base - #S402 (Matte Black)

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Product Highlights

  • Extension Rear Base for Select :
  • Navy Arms, Savage, Stevens
  • Extension Front Base for Select:
  • Anschutz, Browning, Churchill, Marlin
  • Mauser, Musgrave, Navy Arms, Parker-Hale
  • Colt, Cooey, Enfield, H&R, Herters
  • Interarms, Savage, Schultz & Larsen
  • Sears, Smith & Wesson, Stevens, Voere
  • Weatherby, Winchester
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  • 1Description

The Grand Slam Steel Top Mount Base - #S402 (Matte Black) from Weaver has been machined to tight tolerances for a custom fit. A square-cut notch mates to the sturdy cross bolt in every Weaver top mount ring.

Extension rear base for:
Navy Arms Country Boy Muzzleloader
Savage Axis Series, 10, 12, 110, 112 (All Long Action AccuTrigger), 10, 12, 110, 112 (All Short Action AccuTrigger),10 ML II
Stevens Savage/Stevens 200

Extension front base for:
Anschutz 1568
Browning Bolt Action BBR, Hi-Power, Other Caliber (Older Models), BBR (Bolt Action), Long & Short Actions
Churchill 950, 950-C, 972-C
Marlin 455, MR7
Mauser Receiver Ring about 1.410" diameter (98FN), Receiver Ring about 1.300" diameter (Swedish 96)
Musgrave Mark I, II, III, IV
Navy Arms Country Boy Muzzleloader
Parker-Hale 1000, 1000C, 1100, 1200 & 1700
Colt 57
Cooey 71
Enfield with receiver cut down like Winchester 70
H&R 300, 301, 330 & 370 (Pre 1973), 300 & 301 L.A. in 270, 30-06, 7mm & 300 Win (1973+)
Herters J9
Interarms Viscount
Savage Axis Series, 10, 12 & 16 (Short Actions ). Striker , Pistol , 510, 512,516 S/A, 10 ML (2-piece ONLY) Pre 2003 Models, 110, 112, 116 (Long Actions ); 210 Shotgun (use X-high rings)Pre 2003 Models, 10, 12, 110, 112 (All Long Action AccuTrigger), 10, 12, 110, 112 (All Short Action AccuTrigger),10 ML II
Schultz & Larsen
Sears 50, 51, 51L, 53
Smith & Wesson Mauser Actions with small receiving ring about 1.30" diameter
Stevens 110E, Savage/Stevens 200
Voere 2150, 2165/1, 2165/2, 2165/3 & 2165/4 (Mauser Action)
Weatherby FN Mauser style actions
Winchester 52 with hole spacing the same, 70 Long Action with hole spacing the same, 670, 770, 70 Long Action with the hole spacing different & 70 Super Express, 70 Short Action (1984+)

Note: For the Mauser Receiver Ring about 1.410" Diameter (98FN), Receiver Ring about 1.300" Diameter (Swedish 96), shimming is probably required for perfect scope alignment. The rear base may require modifications for correct fit to military actions
Note: For the Interarms Viscount, shimming is probably required for perfect scope alignment
Note: For the front extension base Savage Axis Series, 10, 12 & 16 (Short Actions). Striker, Pistol, 510, 512,516 S/ A, 10 ML (2-piece ONLY) Pre 2003 Models, 110, 112, 116 (Long Actions); 210 Shtg (use X-high rings)Pre 2003 Models, shorter tube scopes or red dot scopes use #402 extension front base or one-piece base if available. Extension base allows an extra .689"
Note: The front and rear extensions for the Savage 10,12,110, 112 (All Long Action AccuTrigger), 10,12,110, 112 (All Short Action AccuTrigger),Stevens Savage/Stevens 200 Can be used with tactical multi slot base
Note: For the Winchester 52 with the hole spacing the same, 70 Long Action with the hole spacing the same, 670, 770, 70 Long Action with the hole spacing different & 70 Super Express, the handiest way to pinpoint the correct base for the Winchester 52 & Winchester 70 Long action Rifles is to check the spacing of the tapped holes for the rear base and compare it to the hole spacing for the front base.
If the hole spacing is the same, then for model 52 use 46+ 46 and for model 52 use 25+ 57.
If the hole spacing is different, then for model 70 use 47+ 46 and for model 70 use 49A+ 46.
May require bolt and/or safety alteration, otherwise firearm cannot function safely and properly. Consult with a qualified gunsmith
UPC: 076683482471
In the Box
Weaver Grand Slam Steel Top Mount Base - #S402 (Matte Black)
  • 2 x Custom-Hardened Fastening Screws
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description
    Packaging Info
    Package Weight 0.04 lb
    Box Dimensions (LxWxH) 2.0 x 1.0 x 0.2"

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