Lyman Tru-Lock Mounts. 1- and 2-piece.

Models include:
Arisaka Models 38 and 99; BF-10 (front) and BR-39 (rear)
Arisaka 7.7 Cal: BF-10 (front) and BR-40 (rear)
Browning Hi-Power .243 and .308 cal: BF-15 (front) and BR-33 (rear)
Browning Lever Action: BR-40 (front) and BR-40 (rear)
H&R Model 317: BR-41 (front) and BR-41 (rear)
Husqvarna (small ring): BF-14 (front) and BR-33 (rear)
J.C. Higgins 50 & 51 (large ring): BF-11 (front) and BR-33 (rear)
Marlin 455: BF-11 (front) and BR-33 (rear)
Mauser 98, FN, Husqvarna: BF-11 (front) and BR-33 (rear)
Mauser 1891, 1893, 1894, 1895, 1933, G33/40, (small ring): BF-14 (front) and BR-34 (rear)
Remington XP 100 & 600; B-4 (1-piece)
Remington 721, 722, 725, 700: BF-10 and BR-30 (rear)
Remington 788-222 Remington 22-250 & 30-30; B-6
Remington 788-44 Mag; B-7
Remington 788-243, 208 Win., 6mm Rem.; B-8
Ruger Model 10/22, cal.22: BF-16 (front) and BR-31 (rear)
Savage 24V (222 Rem/20 Ga. only): B-5
Savage 99 (all models, including those with thumb safety); BF-12 (front) and BR-36 (rear)
Savage 110: BF-10 (front) and BR-35 (rear)
Springfield 1903: BF-13 (front) and BR-37 (rear)
Springfield 1903-A3: BF-13 (front) and BR-38 (rear)
Winchester Model 70 (Post War): BF-10 (front) and BR-31 (rear)
Winchester Model 70 (Post War Before SN 700,000) Mag.: BF-10 (front) and BR-32 (rear)
Winchester Model 70 (Post War After SN 700,000) Mag.: BF-10 (front) and BR-42 (rear)
Winchester Model 70 Late Model Target Rifles, over SN 700,000: BF-10 (front) and BR-43 (rear)