Great Plains Rifle Drop-in Barrel Assembly,
.45 caliber, 1-48" twist, 15/16" octagon, 32" length,
blued, includes tang, percussion ignition for Lyman Great Plains, Investarm Gemmer Hawken




Investarms drop-in barrel, .45 caliber with 1-48" twist for a patched round ball. 15/16" octagon by 32" length. Percussion ignition for Investarms produced Lyman Great Plains rifles and Investarms Gemmer Hawken and Plains rifles. The barrel, plug, adjustable rear sight, blade front sight, rib, rod pipes, and underlug are blued. Fully assembled, this nice barrel assembly is new-in-the-box, unfired. Made in the Italy, by Investarms.
Additional dark brown Delrin nylon ramrod are available at extra cost. Order #RAMROD-324-LYM.
- The 15/16" octagon size will fit Investarms produced Lyman Great Plains, Gemmer Hawken and Plains rifles originally manufactured in .45, .50, or .54 caliber.
- Right hand percussion, the barrel length is 32" (or 33" including the plug).
- Includes a tang
- The rear sight is adjustable for elevation
- Blued steel blade front sight
- Fitted with a factory stainless steel nipple
Additional dark brown Delrin nylon ramrod are available at extra cost. Order #RAMROD-324-LYM.
Track's best Black Powder BORE CLEAN Solvent, with flip-top spout
Bore mop, 100% Cotton, for .45 caliber, 10-32 thread, washable
Ball puller, steel screw, .45 caliber brass collar, 10-32 thread
Bore brush, bronze, for .45 caliber, 10-32 thread
Jag, jagged cleaning tip, brass, .45 caliber, 3/8 rod, 10-32 thread
Wedge Key, forward long oval head, for Lyman Great Plains & Gemmer Hawken Rifle by Investarms, blued steel
Wedge Key, rear long oval head, for Lyman Great Plains & Gemmer Hawken Rifle by Investarms, blued steel
Nipple Wrench for Rifles & Shotguns,
slotted end for #11 nipple
Shooting patches, .010" cotton, .40 - .49 caliber, per 100, dry
Cleaning Patches, 2-1/2" diameter, bag of 100, pure cotton flannel, for .45 to .58 caliber
Ramrod for Investarms Great Plains, Gemmer Hawken, Lyman Great Plains Rifle & Hunter by Investarms,
3/8" brown Delrin nylon, 32-1/2" length.
Flared brass tip threaded 8-32 at front, 10-32 thread at rear.
Made in the U.S.A.
Ramrod for Investarms Great Plains, Gemmer Hawken, Lyman Great Plains Rifle & Hunter by Investarms,
3/8" stained hickory, 32-1/2" long.
Flared brass tip threaded 8-32 at front, 10-32 thread at rear.
Made in the U.S.A.
Ramrod,
5/16" stainless, 36" long rod.
Creedmoor, rigid handle, 10-32 thread
Nipple, 6-.75mm metric thread, for Investarm Gemmer Hawken, Lyman Great Plains, Deerstalker, Trade Rifle #11 CCI cap, stainless steel
- Cone length: 0.375"
- Thread journal length: 0.195"
- Overall length: 0.570"
- Diameter of base: 0.307"
Short Starter, patch & ball starter, with 3/8" hickory rod for .40 to .45 caliber.
Patch puller, corkscrew worm, steel, brass base, 10-32 thread
All sizes are nominal. Please verify with description for more information.
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Barrel Profile
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ReplacementInvestarm - Lyman
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Brand of ManufacturerInvestarm
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Caliber.45 Caliber
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Length32"
KEY-LYMAN-GPR
Wedge Key, forward long oval head, for Lyman Great Plains & Gemmer Hawken Rifle by Investarms, blued steel
KEY-LYMAN-GPR-R
Wedge Key, rear long oval head, for Lyman Great Plains & Gemmer Hawken Rifle by Investarms, blued steel
MINK-OIL
Trapper's MINK OIL TALLOW,
patch grease,
for match shooting & cold weather hunting,
one 8 oz. tin
OX-CLEAN-58C
Cleaning Patches, 2-1/2" diameter, bag of 100, pure cotton flannel, for .45 to .58 caliber
RAMROD-324-LYM
Ramrod for Investarms Great Plains, Gemmer Hawken, Lyman Great Plains Rifle & Hunter by Investarms,
3/8" brown Delrin nylon, 32-1/2" length.
Flared brass tip threaded 8-32 at front, 10-32 thread at rear.
Made in the U.S.A.
RAMROD-324-LYM-H
Ramrod for Investarms Great Plains, Gemmer Hawken, Lyman Great Plains Rifle & Hunter by Investarms,
3/8" stained hickory, 32-1/2" long.
Flared brass tip threaded 8-32 at front, 10-32 thread at rear.
Made in the U.S.A.
RLGP-S
Nipple, 6-.75mm metric thread, for Investarm Gemmer Hawken, Lyman Great Plains, Deerstalker, Trade Rifle #11 CCI cap, stainless steel
Cone length: 0.375" Thread journal length: 0.195" Overall length: 0.570" Diameter of base: 0.307"