C-4 Billet Lower
New Frontier Armory
Model: C-5
Type: Stripped Lower Receiver -- milled from 7075 T6 aircraft grade aluminum billets
Caliber: 9MM
Magazine: MP5
Weight: 0.75 pounds
[caption id="attachment_177669" align="alignnone" width="300"] C-5 Lower Billet[/caption]
Other Specifications and Features of the Stripped C-5 Billet Lower (MP5 Mag):
Magazines can be foundHERE **NOTE: ETS magazines may require slight sanding to ensure proper fitment due to variations from factory H&K Magazines. We have yet to find any fitment issues with HK, Zenith, or KCI mags.
FAQ:
QUESTION: What type of magazines will fit in this lower?
ANSWER: The lower was designed to fit and drop free factory MP5 9mm magazines. It has also been thoroughly tested with many aftermarket magazines to fit and drop free. Although it accepts and shoots other aftermarket magazines (KCI, etc) some slight modification may be needed to get them to drop free from this lower because of the varying width measurement we have seen when checking these magazines to H&K MP5 factory specifications.
QUESTION: Do you offer a reliable last round / empty magazine bolt hold open (LRBHO) System for this lower?
ANSWER: NO, like the original MP5 platform, there is no LRBHO function. You must use either our C-5 Slick Side Upper or our C-5 Non Reciprocating Side Charging upper as they are widened to accept the MP5 magazines. Other manufacturers make uppers cut for MP5 mags as well, but we can't guarantee their compatibility at this time.
QUESTION: What bolt carrier group will work with a MP5 magazine fed AR-9?
ANSWER: The AR-9 BCG that we sell (CLICK HERE for AR-9 BCG) will work in our MP5 Mag AR-9
QUESTION: What LPK will work with this lower?
ANSWER: Although we sell a specific LPK with just the parts needed to build the C-5 lower receiver HERE, any standard AR-15 LPK will work. You will not need the magazine catch assembly, bolt catch roll pin, or trigger guard that are normally included with standard LPKs.
QUESTION: Do I need to use a special buffer when I build my AR-9?
ANSWER: Although its not technically required, it is advised that you either use a 9mm buffer (longer and heavier than carbine) or a spacer in your buffer tube before you place your spring in. The reason for this is to limit the BCG travel to the rear so it doesn't come back forward and smash the bolt catch hard enough to break it. The 9mm BCG is shorter than a standard BCG. You can use a carbine buffer with a spacer (WHICH YOU CAN PURCHASE BY CLICKING HERE).
The New Frontier Armory C-5 Stripped Billet AR-9 lower receiver is proudlyMADE IN THE USAby hard-working American men and women.
FIREARM WARNING:
This is a serialized item considered to be a firearm by BATFE. This item must be shipped to a Federal Firearm License (FFL) holder. All BATFE, GCA & NFA rules apply! This item must be shipped to a Federal Firearm License (FFL) holder. You will be prompted at checkout to pick an FFL to ship to in your area using our FFL Locate tool.YOU will be responsible for checking with your local FFL to ensure this weapon is legal in the state that you reside and that they will accept this weapon on your behalf and transfer it to you.New Frontier Armory, LLC will NOT be responsible for any shipping or admin charges incurred by packages not being accepted by the FFL you choose during checkout.
Weight: | 0.95 LBS |
Dimensions: | 9.50 x 4.50 x 2.25 in |
Color: | Black Ano |