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Weaver Bases 

 

 


 

Weaver Bases Reference Chart
Select Firearm Make (Quick Links)
A - E G - L M - R S T - Z
   
         
Anschutz
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Mark 12   16 16  
54, 54MS, 64, 64MS, 164, 1400 Series,1500 Series   91 91  
153 Deluxe   19 19  
1568   61 46  
1568 in Matte   61M 46M  
1568 in Silver   61S 46S  
         
Browning
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
1885 High Wall (Octagon Barrel) 1, 3 11 29  
22 Auto 18     60A
Sako Actions in 243, 308, 22-250, 222 & 222 Mag.   72 71  
A-Bolt, A-Bolt 22 Stalker; Medallion   47 47  
Above in Matte   47M 47M  
Above in Silver   47S 47S  
A-Bolt Shotgun (Matte)   47M 419M  
A-Bolt (European Model), Mod 52, 52C 5 85 85  
Bolt Action BBR, Hi-Power, Other Cal. (Older Mod.)   45 46  
Above in Silver   45S 46S  
BAR, BAR II, Mark II, BLR Lightning (Lever), BPR 5 54 54  
BLR (Lever Action)   25 25  
BLR with Flat Top Receiver (Older Models)   28 28  
BBR (Bolt Action), Long & Short Actions   47 46  
Above in Matte   47M 46M  
Above in Silver   47S 46S  
A-Bolt WSSM   427 47  
BAR (Matte)       432M
T-Bolt 27 15 15  
         
Colt
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
57   45 46  
Above in Silver   45S 46S  
Coltsman in 223, 243 & 308 Cal. (Round Recever)   25 25  
Coltsman in 264 & 30-06 Cal. (Round Receiver)   54 54  
Coltsman with Sako Style Action in 223 & other Cal   67 65  
Sharps   85 85  
Sauer   35 35  
Sauer in Matte   35M 35M  
Sauer in Silver   35S 35S  
         
CVA (& Brass Pro Exclusives)
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Octagon Barrels / Receivers 17 61A 61A  
Round Barrels / Receivers (Post '96 Models)   418M 418M  
Above in Silver   418S 418S  
         
Garcia
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
73       53
74   67 65  
         
Golden Eagle
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
7000   71 71  
         
Herters
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
J9   45 46  
J9 in Silver   45S 46S  
U9 BSA Action 4 28 28  
U9 Round Receiver   36 35  
U9 Round Receiver in Matte   36M 35M  
U9 Round Receiver in Silver   36S 35S  
         
High Standard
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
High-Power   55 46  
         
Howa
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Howa   36 35  
Howa in Matte   36M 35M  
Howa in Silver   36S 35S  
         
Ithaca
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Deerslayer, 37 & 87 (12, 16, 20 GA.)       62
LSA-55 & LSA-65   61 61  
LSA-55 & LSA-65 in Matte   61M 61M  
LSA-55 & LSA-65 in Silver   61S 61S  
Lightning X3   39 39  
         
Lone Eagle - Magnum Research
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Lone Eagle SSP 91 Pistol   16 16  
         
Marlin
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
45, 30AS, 336, 444, 1894, 1895, Camp 9, 308, 338       63B
Above in Silver       63BS
A1 & 50   15 15  
39A, 39D & Century (Octagon Barrel)   28 31  
39A (Round Barrel) 21 29 16 90
57 Magnum       58
88, 89 & 98   18 18  
80, 81   12 12  
455   45 46  
455 in SIlver   45S 46S  
MR7   47 46  
MR7 in Matte   47M 46M  
MR7 in Silver   47S 46S  
MLS-50 & MLS-54 (Bases sold 2/pack)   406 406  
Above in Silver   406S 406S  
1894 (remove rear sight to use 48958 Dovetail Base)       63B
900, 917, XT-22, XT-17   12 12  
         
Musgrave
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Mark I & Mark II   54 46  
Mark III & Mark IV   45 46  
Above in Silver   45S 46S  
         
New England Firearms (H & R)
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Handy Rifle, Hornet (use Extra High rings)       82
N.E.F. 10 Gauge Shotgun   19 19  
Huntsman Muzzleloader 8     82
         
Norinco
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
22 Auto (Replica of Browning 22 Auto) 18     60A
         
Parker Hale
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
1000, 1000C, 1100, 1200 & 1700   45 46  
Above in Silver   45S 46S  
2600   71 85  
Midland   71 75  
         
Ruger
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
No. 1 1, 3, 4 85 89  
No. 3 1, 3, 4 85 86  
10/22 in 22 Long Rifle Cal. (3/8 Grooved) 16     TO-9
Above in Matte 16, 25     TO-9M
Above in Silver 16     TO-9S
96/22 & 96/22 Magnum 16     TO-11
44 Carbine Magnum Deerstalker   47 68  
M77 (Round top Drilled)   79 35  
         
Sako
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
L579   72 71  
72, 75 & 78   85 85  
Finnwolf     53  
Forester, Finnbear & Vixen (Tapered Dovetails)   67 65  
Whitetail Hunter   61 61  
Above in Matte   61M 61M  
Above in Silver   61S 61S  
         
Sauer
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
200   35 35  
200 in Matte   35M 35M  
200 in Silver   35M 35M  
SHR 970   25 25  
         
Schultz & Larsen
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Schultz & Larsen   54 54  
         
Sears
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
42 & 43   12 21  
50 & 51   45 46  
Above in Silver   45S 46S  
51L   55 46  
53   47 46  
Above in Matte   47M 46M  
Above in Silver   47S 46S  
         
Shilen
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Flat Top Receiver   61 61  
Above in Matte   61M 61M  
Above in Silver   61S 61S  
Round Receiver   35 35  
Above in Matte   35M 35M  
Above in Silver   35S 35S  
         
Smith & Wesson
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Mauser Actions w/small rec. ring about 1.30" dia   55 46  
1500, 1600 & 1700   36 35  
Above in Matte   36M 35M  
Above in Silver   36S 35S  
29, 629, 625, 686 & L, K & N Frame Rvlrs (Factory Drilled) 8, 17, 23     401
Above in Silver 8, 17, 23     401S
41 Pistol       62
2206 TGT Pstl (silver) 17     407C
         
Stevens
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
26   22 22  
27 Octagon   31 31  
53   16 21  
56 & 66   12 13  
57, 76, 4171/2 & 762   12 12  
110E   61 46  
Above in Matte   61M 46M  
Above in Silver   61S 46S  
416   18 17  
417   15 15  
418 & 418 1/2   16 16  
Savage/Stevens 200 22 46 46  
Above in Matte 22 46M 46M  
300, 305, 310, 315, Cadet 5, 28 16 16  
         
Tikka
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Tikka w/Flat Receiver   61 61  
Above in Matte   61M 61M  
Above in Silver   61S 61S  
Sako Design w/Tapered Dovetail   67 65  
         
Traditions
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Whitetail w/Octagon Receivers 17 61A 61A  
In-Line Muzzlelaoders w/Round Receivers -Matte   418M 418M  
Above in Silver   418S 418S  
         
Winchester (Includes Ranger Models)
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
03 & 63   19 22  
06, 62, 62A & 90 w/Octagon Barrel   32 32  
05, 07 & 10   20A 17  
43   18 18  
52 (hole spacing different) 6, 9 25 57  
52 (hole spacing same) 6, 9 46 46  
Above in Matte 6, 9 46M 46M  
Above in Silver 6, 9 46S 46S  
54, & early Mod. 70 w/Serial No. below #66,350 6 48 46  
57 & 69   12 13  
60, 67 & 68 6 21 21  
61 w/Round Barrel   19 13  
61 w/Octagon Barrel   25 32  
69A, 72 & 47   12 17  
70 Long Action (hole spacing same), 670, 770 9 47 46  
Above in Matte   47M 46M  
Above in Silver   47S 46S  
70 Long Action (hole spacing different) & 70 Super Express 9 49A 46  
70 Short Action (1984+)   47 46 99
Above in Matte   47M 46M  
Above in Silver   47S 46S  
74   12 12  
75 Sporter   15 30  
75 Target   15 16  
77   15 32  
88 & 100       53
94 Angle-Eject Big Bore   95 403  
94 Angle-Eject (except earliest models)   95 94  
94/22 16     TO-10
520   85 85  
777   71 71  
X-150, APEX Muzzleloaders   418M 418M  
Above in Silver   418S 418S  
70 WSSM   428 46  
70 WSM   47 46  
Above in Matte   47M 46M  
Above in Silver   47S 46S  
SXR 5 54 54  
Beretta
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Mato Rifle   49A 46  
Pintail Slug Gail   35 35  
Pintail Slug Gail in Matte   35M 35M  
Pintail Slug Gail in Silver   35S 35S  
         
British 303
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
With Enfield Action 4, 15     TO-1
         
BSA
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Monarch Medium Action in 222, 243 & 308 25 36 35 97
Above in Matte   36M 35M  
Above in Silver   36S 35S  
CF2, Monarch Long Action in 7mm, 270 & 30-06 25 36 35 98
Above in Matte   36M 35M  
Above in Silver   36S 35S  
Other High-Powers   28 28  
         
Churchill
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Highlander   36 35  
Highlander in Matte   36M 35M  
Highlander in Silver   36S 35S  
         
CIL
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
871       62
900   19 19  
950 & 950-C   61 46  
950 & 950-C in Matte   61M 46M  
950 & 950-C in Silver   61S 46S  
972-C   45 46  
972-C in Silver   45S 46S  
         
Cooey
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
71   47 46  
71 in Matte   47M 46M  
71 in Silver   47S 46S  
         
Enfield with receiver cut down like
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Remington 30   11 11  
Winchester 70   47 46  
Winchester 70 in Matte   47M 46M  
Winchester 70 in Silver   47S 46S  
Remington 721   36 35  
Remington 721 in Matte   36M 35M  
Remington 721 in Silver   36S 35S  
         
H & R
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
65, 165, 150 & 151 (Auto)   18 18  
250, 251, 264, 265, 365, 450 & 550   18 16  
232C Shotgun (10 Ga.) & 980 Ultra   19 19  
155, SB2 Ultra (.22-250), Topper 158C (1973+), 157       82
300, 301, 330 & 370 (Pre 1973)   45 46  
Above inSilver   45S 46S  
300 & 301 S.A. in 22-250, 243 & 308 (1973+)   83 84  
300 & 301 L.A. in 270, 30-06, 7mm & 300 Win (1973+)   54 46  
317 & 322   11 35  
317 (Pre 1975)   67 65  
360 & 361       81
700       87A
755, 765, 852 & 865   17 21  
800   12 12  
Topper 30, 22 Jet, & Mod 158 (Pre 1973) 18     60A
Pardner (Lever Action ONLY)       82
Pardner Pump 12Ga       505
         
Interarms (Rossi - Stoeger)
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
ATD 18     60A
Mark X 1 55 20A  
Mini Mark X 1 23 71A  
Viscount 1 45 46  
         
Japanese
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
6.5mm & 7.7mm 6     70
         
Lee-Enfield
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Lee-Enfield 4, 15     TO-1
         
Mauser Including FN, HVA & Swedish
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Receiver Ring about 1.410" Diameter (98FN) 1, 2 45 46  
Above in Silver   45S 46S  
Receiver Ring about 1.300" Diameter (Swedish 96) 1, 2 55 46  
Bauer 3000 & 4000   68 46  
Mark X 1 55 20A  
         
Modern Muzzle Loading
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Knight MK-85, BK-92 & T-Bolt (Flat receivers)   61 61  
Above in Matte   61M 61M  
Above in Silver   61S 61S  
LK-93, Wolverine, Legend, Disc, American, Revolution   45 45  
Above in Silver   45S 45S  
         
Mossberg
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
25, 26, 42, 46M, 140, 142 & 146, 45-46 w/ 3/4" dia. Bbls   12 13  
40   16 21  
43, 44, 144, 46BT & 35   12 16  
45, 46,Early Models with 13/16" Dia. Bbls   12 16  
320, 340, 342 & 620   21 21  
640       63B
680, 800 & 695-Shotgun (use dual extension rings)   55 55  
50, 51, 151, 152, 350 & 352   12 12  
400   20A 42  
472, 479 & 679       80
500AS (Pre 1997) & 600 Shotguns       88
500 (1997+), 590 & 835 Shotguns (Matte)       417M
810 & RM7   25 11  
1500 & 1700   36 35  
Above in Matte   36M 35M  
Above in Silver   36S 35S  
930, 935 (Matte)       430M
464   403 403  
         
Remington
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
700, 78, 40X-L, 721, 725 (all Long Actions)   36 35 98
Above in Matte   36M 35M  
Above in Silver   36S 35S  
700, 78, 40X-S, 722, 725 (all Short Actions), 700 Mzl. Ldr. 25 36 35 97
Above in Matte   36M 35M  
Above in Silver   36S 35S  
710, 770   71 71  
788   76 75  
7 w/3 holes, 600, 660 & XP-100       70
7 w/4 holes (New in 1999)MATTE, 673   421M 35M  
740, 742 & 760       62
4, 6, 74, 76, 7400 & 7600       93
10, 11, 12, 34*, 341*, 510, 511, 512 & 521T 6 43 42  
12A, 121 with 3/4" Diameter Barrels   18 13  
121 with 13/16" Diameter Barrels   18 17  
12C Octagon Barrel   18 31  
14 & 141   20A 27  
41 6 17 17  
24 & 241 18     60A
25   18 21  
30 & 720   11 11  
33 6 17 13  
513S & 513T   43 44  
514   16 21  
514 (not drilled & tapped) & 550 4 12 12  
541S & 541T   15 15  
798   55 20A  
799   71A 23  
         
Savage
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
3   16 21  
4 & 5   12 13  
6 & 7   12 12  
29 (Round Barrel)   11 22  
19 & 23   15 16  
24 17     74
25 (Octagon Barrel)   19 31  
40 & 45   11 11  
67 Shotgun       93
93 5, 26 16 16  
99, 1895 & 1899   14 19  
170       62
219   12 30  
10, 12 & 16 (Short Actions). Striker Pstl, 510, 512, 516 S/ A, 10 ML (2-piece ONLY) Pre 2003 Models 22 61 46  
Above in Matte 22 61M 46M  
Above in Silver 22 61S 46S  
110, 112, 116 (Long Actions); 210 Shtg (use X-high rings) Pre 2003 Models   61 46 413
Above in Matte   61M 46M  
Above in Silver   61S 46S  
2400   67 65  
10, 12, 110, 112 (All Long Action AccuTrigger) 22 46 46  
Above in Matte 22 46M 46M  
Above in Silver 22 46S 46S  
Axis Series   46 46  
Above in Matte   46M 46M  
Above in Silver   46S 46S  
10,12,110, 112 (All Short Action Accutrigger) 22 46 46  
Above in Matte 25 46M 46M  
Above in Silver   46S 46S  
10 ML II   46 46  
Above in Matte   46M 46M  
Above in Silver   46S 46S  
93R17 5 ,28 16 16  
Mark II 5, 28 16 16  
Cub 5, 28 16 16  
         
Springfield
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
O3 6 54 55  
O3-A3 8 59 45  
         
Springfield Armoury
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
1911 A-2 SASS Conversion       26
         
Stevens - Springfield
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
83   16 21  
85, 87 & 872 4 12 12  
         
Thompson Center
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Contender, G2 (Handgun & Carbine Rifle)       92A
Above in Silver       92AS
Scout Rifle & Scout Pistol       404
TCR       405
ThunderHawk & Firehawk (2ea. per pkg.)   406 406  
Above in Silver   406S 406S  
Traditional Style Muzzleloaders, New Englander 19     408
Encore, Omega, Impact       410
Above in Silver       410S
System 1 & Black Diamond (2ea. per pkg)   411 411  
Above in Silver   411S 411S  
         
Valmet
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Tapered Dovetail, Sako Design   67 65  
         
Voere
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
2130 4 28 28  
2150, 2165/1, 2165/2, 2165/3 & 2165/4 (Mauser Action)   45 46  
Above in Silver   45S 46S  
         
Weatherby
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
Vanguard 1, 22 36 35  
Above in Matte 1, 22 36M 35M  
Above in Silver 1, 22 36S 35S  
Mark V std. Cal incl. 240mag, Centerfire pistol, 224 Varmintmaster, Ultra Lightweight   36 415  
Above in Matte   36M 415M  
Above in Silver   36S 415S  
FN Mauser style actions   45 46  
Above in Silver   45S 46S  
Mark V mag. Cal except 240 mag.   424 35  
Above in Matte   424M 35M  
         
Western Field
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
730 6 25 11  
740       63B
Above in Silver       63BS
750   67 65  
770   55 20A  
772       80
775 & 780   55 55  
         
White
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
"W" Series   35 11  
         
ZB
    Top Mount Bases
Model of Firearm Notes Rear Base Front Base 1-Piece Base
22   28 24  
Hornet, 218 Bee   39 34  

 

Notes
     
1 - Shimming is probably required for perfect scope alignment.
2 - Rear base may require modifications for correct fit to military actions.
3 - Front base may require modification for correct fit.
4 - Gun will have to be drilled and tapped.
5 - Front base screws may need to be shortened by grinding.
6 - May require bolt and/or safety alteration, otherwise firearm cannot function safely and properly. Consult with a qualified gunsmith.
8 - Remove rear sight to use.
9 - The handiest way to pinpoint the correct base for the Win. 52 & Win. 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. Does it have:
HOLE SPACING THE SAME
 Model 52: use 46+ 46, Model 70: use 47+ 46
HOLE SPACING DIFFERENT
  Model 52: use 25+ 57 Model 70: use 49A+ 46
12 - Rifle has Grooved Receiver for Tip-Off Rings.
13 - Ruger Mark II Pistols. Weaver only offers a clamp on base with 1" rings (Pistol Mount System #306). Ruger supplies a short or long base and 1" or 30mm rings w/factory drilled and tapped pistols. Contact Ruger at 602-778-6555 for these items.
   15 - Base accepts Tip-Off Rings only.
16 - TO-9, TO-10 & TO-11 bases accept either Detachable Top Mount Rings or Tip-Off Rings. Each have crossbolt slots and 3/8" grooves for both applications.
17 - Must be factory drilled and tapped.
18 - One-Piece base attaches to barrel and extends back over receiver.
19 - Requires the use of Thompson/Center base adapter.
21 - Rear base is positioned on top of receiver and front base is positioned on the barrel. Drilling & tapping required. One-piece base mounts w/2 set screws & newer guns are factory drilled & tapped.
22 - For shorter tube scopes or red dot scopes use #402 extension front base or one-piece base if available. Extension base allows an extra .689".
23 - WARNING: NOT FOR USE WITH X-FRAME REVOLVERS. USE ON FIREARMS OTHER THAN THOSE LISTED MAY CAUSE INJURY.
24 - Top mount base is designed to fit 12GA models only.
25 - Multi Slot Base
26 - Base listed will NOT fit the 50th Anniversary Commemorative Revolver.
27 - May be necessary to grind down base screws.
28 - Rear base screws must be shortened by grinding

 

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Updated March 2024