can you use this all over insides of the pistol or just the barrel?

Same as others. Metal parts for sure. I have had limited contact with polymer portions as well without any sign of softening or otherwise affecting it. As others have said I always follow up with a clean dry patch for the barrel, and a rag for other parts.

Will this remove copper as well?

I assume you're talking about copper plated bullets yes it will remove the fouling of copper with a copper brush or brass

Can this be used on any plastic parts that in my Ruger 10/22 rifle?

I have not used it on plastic parts. I think you should contact the manufacturer about this. The solvent seems extremely powerful when I have used it in the bore of my Winchester Model 70 Featherweight. I wouldn't think it would be suitable for plastic, but I'd say you should ask both Ruger and Hoppe's.

Is it good for cleaning bike chain?

Sure it can. It's a solvent. Dry and lightly oil the chain after.

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No. 9 Gun Bore Cleaner

Product ID: 1208248

Details

Brand
Hoppe's
Included Components
Hoppe's No. 9
Liquid Volume
473.18
Set Name
Hoppe's No. 9
Unit Count
1.0 Count

⚡Ultra potent formula

⏱️Rapid deep penetration

🛡️Child-proof safety cap

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€ 28.23

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Clean deeper, shoot sharper — the classic choice for pros!

SAFETY FIRST DESIGN - Child-proof cap ensures secure handling without compromising ease of use.
GENEROUS 16 OZ BOTTLE - Ample supply for consistent, long-term gun care without frequent repurchases.
TRUSTED LEGACY SINCE 1903 - Join a century-long tradition of precision and reliability.
ULTRA POTENT CLEANING POWER - Experience rapid, deep bore cleaning that professionals swear by.
PRECISION MAINTENANCE ESSENTIAL - Keep your firearms in peak condition with a worldwide favorite formula.

Hoppe's No. 9 16 oz. Gun Bore Cleaner delivers ultra potent, fast-acting cleaning power with a child-proof cap for safety. Trusted globally since 1903, this 16 oz bottle penetrates deeply to maintain firearm precision and reliability, making it a top-ranked essential in gun maintenance.

Specifications

ASIN	B000JMLUC6
Best Sellers Rank	#3,324 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #12 in Gun Maintenance
Brand Name	Hoppe's
Customer Reviews	4.8 4.8 out of 5 stars (30,124)
Global Trade Identification Number	00026285511246
Included Components	Hoppe's No. 9 Gun Bore Cleaner, 16 oz. Bottle (packaging may vary)
Item Type Name	Hoppe's No. 9 Gun Bore Cleaner, 16 oz. Bottle (packaging may vary)
Item Weight	299 Grams
Liquid Volume	473.18 Milliliters
Manufacturer	Hoppe's
Manufacturer Part Number	916
Model Number	916
Set Name	Hoppe's No. 9 Gun Bore Cleaner
UPC	026285511246
Unit Count	1.0 Count

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