SCAR AR 17 Conversion Lower

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Product Overview

Take your SCAR 17 to the next level with our SCAR AR 17 Caliber Conversion Lower!
This lower is designed to fit the FN SCAR 17 and allow the use of all SCAR 16 calibers like 5.56x45, 7.62x39, 6.5 Grendel and more!  This lower also uses AR-15 trigger groups, magazine releases, grips and safety selectors with AR-15 magazines.  Please see below for additional parts needed to complete your build!
***This lower is not a firearm and does NOT need to be shipped to an FFL***
- The factory lower grip screw will not work with this lower.  This lower utilizes AR15 grip screws.
- This lower comes with our Caliber Conversion Firing Pin and must be used in combination.  Please watch our video below for more information.  Extra firing pins can be purchased here.
- Shop Deadshot Barrels for custom SCAR 16 barrel assemblies!
- Allows the use of SCAR 16 calibers in a SCAR 17 upper receiver.
- Comes with our Caliber Conversion Firing Pin
- Flared magwell for easier magazine insertion.
- Rear QD point on right side of lower.
- Internal bolt catch release for ambidextrous manipulation.
- Bolt catch and bolt catch hardware included.
- AR15 safety selecter spring and detent included.
- Compatiable with most AR15 trigger groups.  Triggers like the Fostech Echo or Rare Breed FRT-15 will currently not work in the lower.
- Made from billet 7075 aluminium with a black or FDE hard coat anodize finish.
- Weight = 12oz
Additional Parts Needed:
- AR15 Trigger Group 
- AR15 Safety
- AR15 Pistol Grip
- AR15 Magazine Release
- SCAR 16 Bolt
- SCAR 16 Barrel Assembly
Additional takedown pins and clips can be purchased from the links below.
Disclaimer:  Lingle Industries is not responsible for the misuse or improper use of the SCAR AR 17 Caliber Conversion Firing Pin.  Using this firing pin without a SCAR 16 Bolt and barrel assembly in a SCAR 17 upper receiver can cause serious harm.
Lingle Industries is not affiliated with FN  The use of "FN" or "SCAR" is for advertising of aftermakert products for FN platforms only.

Product Videos


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  • 5
    Awesome Product!

    Posted by MANUEL on Nov 6th 2023

    fit and finish is great aesthetically and physically. everything about it is top notch and the simplicity of the lingle conversion (lower, bolt, firing pin) vs the factory FN cant be beat. the only draw back is disassembly. you MUST have the hammer locked and weapon on safe to prevent the hammer from falling and hitting the internal bolt catch lever. Its made of plastic and just the bolt moving forward from resting on the back of the carrier to contacting the plastic part is enough to break it. Other than that, i would highly recommend this product to anyone looking to be different.

  • 5
    AR17 Conversion

    Posted by SteveP. on Sep 30th 2023

    The lower arrived quickly and was packaged well Machining is excellent and the finish was perfect. Assembly was smooth and easy with all parts fitting perfectly. I used FN factory 16 barrel and bolt assembly.installed in a NRCH SCAR 17. Testing so far has been 100% reliability. .