Based out of the UK, BSA has been in business for over 100 years. They are Great Britain's oldest gunmaker and small arms manufacturer. They own a number of shooting related businesses including ammunition, shooting supplies, and rifle scopes. The rifle scope side of their business was formed in 1996 and is called BSA Optics.
BSA offers a number of different rifle scope models, including models for:
- Air rifles
- Rimfires
- Centerfire
- Tactical
- BDC models (Sweet series)
They are best known for their BDC (Bullet Drop Compensation) models, which offer built-in bullet drop compensation when utilized with specific rifle calibers and bullet weights. These models are unique to the industry as they allow the shooter to select a range and the scope automatically compensates for the bullet drop.
Pricewise, BSA offers scopes that will fit most any budget. They have a good reputation in the rifle scope industry, and offer a decent warranty.
I've got 2 of their BDC models and really like both. I have the Sweet 22 in a 6X18 and a Sweet 17 in a 6X18. I have to say that I can routinely hit targets with a .22 at distances over just over 100 yards using the BDC feature. For the money, they were a great value.
BSA has recently started offering factory refurbished models for sale as well. These models were sent in for repair and the original owner was shipped a replacement scope. BSA takes the problem scopes and does a complete refurbishment at their US factory. Those models are then sold as new refurbs at a deeply discounted price.
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 BSA Panther Hunting Rifle Scope 35x10x50mm  US $72.00
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 BSA DeerHunter 25 10x Rifle Scope US $15.51
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 BSA MD416X40 4 16x40 Mil Dot Target Hunting Rifle Scope US $33.55
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 BSA Stealth Tact 4 16X44 Sts416X44 US $213.21
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 BSA Scope Mil Dot 3 9X40 Md39X40 US $55.99
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 BSA Stealth Tact 6 24X44 Sts624X44 US $230.29
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 BSA Stealth Tact 3 9X40 Sts39X40 US $167.99
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 BSA Stealth Tact 4 16X44 IR Sts416X44Ir US $230.29
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 BSA Scope 15 45X32 W Tky Rgb B01545X32Rgb US $111.99
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 BSA Scope 35 10X50 W Deer Reticle Sdh3510X50 US $196.27
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 BSA Scope Deer Hunter 3 9X50 Dh39X50 US $73.21
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 BSA Scope 4 16X40 Sp Mil Dot Comd416X40Sp US $153.57
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 BSA Scope Airgun 4X32 Gamo Ar4X32 US $76.71
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 BSA Scope 6 24X40 Sp Mil Dot Comd624X40Sp US $170.65
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 BSA Scope 6 24X40 RgbGE Mil Dot US $204.81
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 BSA Scope Airgun 2 7X32 Ar27X32 US $85.25
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 BSA Scope Huntsman 3 9X40MM Tv Hm39X40Tv US $73.21
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 BSA Scope 8 32X44 Stealth Tact Sts832X44 US $247.38
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 BSA Scope Pistol 2X20 Black Ps2X20 US $68.17
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 BSA Scope 4 16X44 Sp Catseye Cat416X44Sp US $167.99
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 BSA Scope 35 10X50 Sp Catseye Cat3510X50 US $153.99
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 BSA Scope 3 9X50 Rgbd Huntsman Hm39X50Rgbd US $100.65
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 BSA Scope 3 9X40 W Deer Reticle Maj Sdh39X40 US $170.65
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 BSA Scope 22 4X32 Black S4X32Wr US $34.01
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 BSA Scope 3 9X40 IrGE W Deer Reticle US $187.73
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