54 Cal. 4,5

MK 45 5-inch / 54-caliber (lightweight) gun

Diabolo RWS Super Field, cal. 4,52 mm, 0,54 g

54 bore hi-res stock photography and images - Alamy

54 cal Lyman Great Plains Hunter muzzleloading rifle

Carabine Aria Compressa, DIANA 54 cal. 4,5

54 Caliber 348 Grain Aero Tip Copper Mag Power Belt (15 Per Pack) by Powerbelt

THOMPSON CENTER RENEGADE .54 CALIBER MUZZLELOADER - SOLD!!!

1/300 Scale 5 In 54 Cal Mk 45 Naval Gun Set Of 4 (AVS4YHSAF) by wachapman

Whitney Arms 1841 Percussion Rifle .54 cal for sale

Lyman Great Plains Flint 54 Caliber

5/54 cal. Mark.45 Mod.4 - Naval Gun Barrels, Tetra Model Works SA-35004

Rare Jennings 4 shot Multi-Charge flintlock rifle .54 caliber (AL8122) for sale

Review: Norinco Type 54 From AIM Surplus

Bloodline 54 Cal 325 Grain Muzzleloader Bullets - Knight Rifles

Colt SAA Frontier Six Shooter, .44-40 cal. revolver, 4 5/8” barrel, Engraved, 1894, Antique