PART # |
FIREARMS FIT |
Hammer Slot Dimensions (W x H) |
GTHM68 |
Winchester 94s and Big Bore 94s including angle-eject (except 94/22) and Ithaca X-caliber - |
0.360" x 0.139" |
GTHM69 |
Winchester 94/22 |
0.315" x 0.125" |
GTHM70 |
Marlin Lever Actions 1957-1982 |
0.320" x 0.094" |
GTHM71 |
Browning BL-22, Astra 357 |
0.365" x 0.235" |
GTHM72 |
Ruger Blackhawk, H&R Topper, New England Firearms Handi Rifle |
0.315" x 0.238" |
GTHM73 |
Browning BLR 1981-1991. Does not fit 1992 & later models. Not for use on folding hammers. Ithaca Tikka 12-70 over/under. |
0.555" x 0.190" |
GTHM74 |
All Marlin Lever Actions made in 1983 & later including 39A, 39M, 1894, 1894C, 1895S, 336C, 336T, 375, 444S, Glenfield 30A |
0.375" x 0.094" |
GTHM79 |
T/C Contender and S&W Model 29 (DOES NOT FIT T/C G2 Contender) |
0.500" x 0.190" |
GTHM277 |
Henry Big Boy, Pre 2010 models |
0.300" x 0.187" |
GTHM283 |
Henry Single Shot, Henry Big Boy Centerfire Rifles, Post 2010 models |
0.306" x 0.109" |
GTHM284 |
Henry 22 Pump and Lever Action rimfire rifles & Rossi 92/22 & Savage Revel .22 |
0.355" x 0.160" |
GTHM285 |
Browning BLR 1992 -1995 Not for use on folding hammers. |
0.630" x 0.208" |
GTHM308 |
Model 36 Marlin (1936-1947) and Marlin 336 (1948-1956) |
0.285" x 0.159" |
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NOTE: MINOR FITTING MAY BE REQUIRED - Not all hammers are made to exact tolerances. Sometimes you may need to lightly file the opening of your grovtec hammer extension to assure a secure fit. We recommend using a small metal file. You can also use some liquid bluing to re-coat the bare metal if necessary. |