AR-15 Conversion Units
Olympic Arms' conversion units will let you use your complete mil-spec lower receiver with one of our top end assemblies to use one of a number of popular caliber cartridges. We have kits for:
- Pistol Cal (9mm, 10mm, 40 S&W;, 45 ACP)
- Winchester Super Short Magnum (WSSM .223, WSSM .243, WSSM .25)
- 7.62 x 39mm
- 6.8 Remington / SPC
- .22LR Conversion
Our conversion kits and systems require no tools and take just minutes to install. In most cases you just put the top end assembly on your lower and load up the magazine. Our kits do not use mag well inserts and do not require any permanent or damaging modifications to your complete mil-spec lower receiver.
16" 10mm Upper Receiver$721.50 MSRP Complete upper receiver assembly manufactured for 10mm and includes one 18 round polymer magazine.
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16" 7.62 x 39mm Upper Receiver$588.90 MSRP Complete upper receiver assembly manufactured for 7.62 x 39mm and includes one magazine.
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16" 40 S&W Upper Receiver$721.50 MSRP Complete upper receiver assembly manufactured for 40 S&W; and includes one 20 round polymer magazine.
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16" 45 ACP Upper Receiver$721.50 MSRP Complete upper receiver assembly manufactured for 45 ACP and includes one 18 round polymer magazine.
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16" 6.8 SPC Upper Receiver$637.00 MSRP Complete upper receiver assembly manufactured for 6.8 Remington/SPC and includes one magazine.
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16" K74 Upper Receiver$608.40 MSRP 16" carbine in 5.45x39mm
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24" WSSM/OSSM Upper Receiver$895.70 MSRP Upper conversion unit for your complete AR-15 lower receiver designed for the Winchester Super Short Magnum and Olympic Super Short Magnum
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16" 9mm Upper Receiver$721.50 MSRP Complete upper receiver assembly manufactured for 9mm and includes one 30 round polymer magazine.
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