Description
The Scy – Bullpup Conversion for Your AR-15
Turn your standard AR-15 into a compact, modular bullpup rifle with The Scy.
Designed to work with mil-spec AR-15 lowers and common handguards (like M-LOK® and KeyMod™), The Scy moves the trigger forward and shortens the overall length of your rifle—without giving up the performance or customization you expect from your AR.
Key Benefits
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Compact & Customizable: Configure your rifle for different shooting styles, barrel lengths, calibers, and more.
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Compatible with Many Uppers: Use popular options like the FM-15, BRN-180, CMMG Dissent, or PSA Jakl for flexible charging styles and calibers.
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Two Stock Systems Available:
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Sickle Stock (bufferless): 14.5” length of pull
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Stave Stock (buffered): 15.75” length of pull
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Built to Handle Power: Rated for calibers up to .50 Beowulf.
Tech Specs & Features
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Works with all mil-spec AR-15 lowers (with removable trigger guard)
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Lightweight: just 12 oz
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Relocates trigger 9.75” forward for a true bullpup feel
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Maintains AR modularity—swap uppers easily
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Compatible with most aftermarket triggers (adjustable fit)
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Linear trigger system adds less than 1 lb of pull weight while directly mirroring your choice of triggers feel
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Ambidextrous setup possible
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M-LOK® and KeyMod™ compatible
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CNC-machined internal components
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Hand-assembled and tested in the USA
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Lifetime warranty
Notes & Compatibility
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Firearm not included
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Revised to fit Gen 3 P-MAGs and more trigger types
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Minimum recommended barrel length: 11.5 inches
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Other buffer stock options available via PDF on our media page
Christopher Curtis (verified owner) –
The Scy is exactly what the description said it it. It’s not some flexible piece of crap. I do wish they would make a all metal one though. The trigger is crisp but don’t buy a flat CMC type. It will not work. Also you may end up shaving some of the poly down for a upper to fit. Not a big deal. Oh and a Gen 3 PMAG won’t work either. It’s that numb on it that keeps it from sliding all the way in. For a one size fits all kit these minor issues are not that big of a deal. I recommend this product and hope for more versions of this (maybe metal) to come out in the future.
Joseph Fletcher III (verified owner) –
The polymer on The Scy is excellent, similar in quality and feel to a Glock lower. I must have an updated version because I can use Gen 3 PMAGS. For my build, I used an Anderson Manufacturing AR-15 lower receiver, CMMG lower parts kit, CMMG Ambidextrous Magazine Catch, Geissele SSA-E Trigger, and a FM Mike 15 Gen 2 as an upper receiver. For a cheek rest, I used Magpul XTM Enhanced Rail Panels to cover over the picatinny. With the 16-inch barrel, my bullpup is slightly over 26-inches in length and at 6 1/2-pounds (unloaded), it is the lightest bullpup in my collection.
Sandor Lin (verified owner) –
Excellent build quality and feel. Very well thought out and engineered. Really nice trigger design and feel. I have used this on a std AR aluminum lower as well as a polymer lower, both have run without any issues. Make sure it’s a lower w/o the trigger guard. Depending on your lower, there might be some small adjustments/modifications to make it fit and run perfect but pretty simple to do w/ a file/sandpaper/dremel. I would definitely recommend picatinny rail covers for your upper for your cheek weld, and definitely recommend an ambi mag release for an easier loads/reloads. The rear safety delete plug is a nice recent addition so that you only use the front safety. I have an ambi safety lever installed, but it may take a little trial and error fitting as not all ambi safeties will work depending on their shape. This is a must buy if you’re considering an easy bullpup conversion to build, perfect for the later generations of AR style uppers with the piston drive mechanisms (brn180, jakl, foxtrot, dissent). I prefer this conversion vs some of the other bullpups I have. Definitely recommend.