Hydra-Matic Div® M16A1 Rollmarked Semi Auto Receiver
Batch 22 - ETA OCT 2026 - We are making a enough to keep on hand, sign up for in stock notifications for the color you want, when they are finished we will list them!
Batch 21 Shipping
If we run out we will take preorders
2 options - Black w/ANAD Marks or Grey without - No custom requests
Put YOUR cell # in the order & have a copy of your FFL's license sent to ffl@intlmilco.com reference your order # & name
- INTL.MIL.CO is the owner of the HYDRA-MATIC DIV® brand, to ensure traceability on our lowers we operate under the Hydra-Matic Div name as well
- SEMI AUTO We are Licensed 07/02 FFL/SOT - MGs depicted in photos are registered or real examples
- OPTIONAL MK18 MOD0 Engraving (Data packs on backorder and will be sold seprately from this batch, price adjusted)
- If you are building a normal rifle or a MK12 skip this
- 1:1 Markings - Engraving painstaingly copied off REAL Crane Hydra-Matic Mk18-0, see photos
- Roll-stamped markings just like the originals, including the serial # font - Clone correct for MK12 and MK18 rifles, finest M16A1 replica lowers being produced
- MFR Info and model # is laser engraved in the trigger well, visible when rifle is upside down - see photo for example.
- Hydra-Matic Specific Correct Grey Professionally Anodized by best in business OR Black
- Black lowers are great for Mk18 mod 0 since the engraving stands out
- M16 Profile interior pocket (NO Fake Sear Marks)
- All GCA and NFA laws apply - We ship to California
- All our products are in NFA E-File system
- This is a SEMI AUTO recevier and ships to a licensed FFL holder when complete, read the message at the top for submitting FFLs
- I DO NOT OWN Colt / HR / FN Dies
- We don't sell 80% receivers
Email me for questions: sales@intlmilco.com
Sales Tax for Texas Residents
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30 Reviews Hide Reviews Show Reviews
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Hydramatic lower
It is perfect.
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GM Hydramatic lower
Absolutely perfect in every way.
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GM lower Batch 10
Nothing but the best. From quality to customer service. Can’t go wrong with an IntMilCo build. The wait is well worth it.
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Hydra-Matic M16A1 lower
Finish and workmanship is fantastic on receiver. Fully expect the fit to be the same when I get the final product assembled. Chris and Intl Mil Co continue to produce great equipment for niche applications, that typically have discerning clientele.
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M16A1 Hydra-Matic reciever
This lower basically sets the standard for a M16A1 for those in need of a lower for cloning. Fit and finish is perfect, anodizing is great. Great company with great products.
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GM lower
Top quality lower, perfection on details
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GM lower
Great looking receiver. Well worth the wait.
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GM Hydramatic
It is legit. Worth the wait and cost. Overall happy. Thanks.
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GM Hydra-Matic 100% Lower Receiver
A very long wait, but definitely worth it for the quality of the receiver. Customer service and communication were good.
