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complete lower
In mathematics, the least-upper-bound property (sometimes the completeness or supremum property) is a fundamental property of the real numbers and certain other ordered sets. A set X has the least-upper-bound property if and only if every non-empty subset of X with an upper bound has a least upper bound (supremum) in X.
The least-upper-bound property is one form of the completeness axiom for the real numbers, and is sometimes referred to as Dedekind completeness. It can be used to prove many of the fundamental results of real analysis, such as the intermediate value theorem, the Bolzano–Weierstrass theorem, the extreme value theorem, and the Heine–Borel theorem. It is usually taken as an axiom in synthetic constructions of the real numbers (see least upper bound axiom), and it is also intimately related to the construction of the real numbers using Dedekind cuts.
In order theory, this property can be generalized to a notion of completeness for any partially ordered set. A linearly ordered set that is dense and has the least upper bound property is called a linear continuum.
I have 3 of these...$260 each. Ill cover bcg if we meet at my ffl here in leb.
Aero precision M4E1 lower receivers with odin works enhanced LPK and Aero precision buffer kit.
Bought enough for 2 builds. Selling the extras. The items in this listing are new, unless marked as used.
Aero EPC-9 receiver set with complete lower.
Sale includes:
Aero EPC Upper
Aero EPC Lower
Aero EPC 7.7oz Buffer
Aero M5 Carbine Spring
Aero Buffer Tube, End Plate, Castle Nut
Aero Lower...
#1 Unfired.
JBO Enhanced Billet Lower
RRA LPRK, Single Stage Trigger
Aero H Buffer Kit
Battle Arms Safety
Magpul SL-S
Magpul K2+
$300, shipped.
PayPal or Venmo, no notes.
Your FFL MUST accept transfers from a individual. No trades, not parting out.
#2 Unfired.
JBO Enhanced Billet Lower
RRA...
Aero Precision Gen 2 model X15 Complete Lower Receiver w/out stock
New. Zero round count. No box. No stock. No brace. No damage.
Add a brace and make it a pistol. Or add a stock and make it a rifle.
Includes pre-installed lower parts kit, carbine buffer, carbine spring, milspec tube, staked...
Complete Minus Trigger! However I can send with trigger springs I was planning on doing a drop in.
Ar10 lower CAR-10 XH -last photo is for the buffer and spring in case you wanted to know more.
Bcm ar buffer tube kit m nut rear plate
Magpul MEO plus
Aero Precision LPK W/O trigger
Aero precision...
Complete Aero M4E1 Lower Receiver - New
Brand new/ unfired/ zero rounds.
Mil-spec tube, ready for your stock or your brace.
Multi-cal.
Small blem, see pic 4. No dings, no scratches.
$220. Face to face. Buyer pays ffl fees. Preferred ffl is Tick Licker Firearms in Salem. May travel within...
I have a complete lower for sale. It started as a stripped aero m4e1 lower so it can be a rifle or pistol(if you swapped out the stock). It’s has only been taken out once to test function. It functioned perfectly with no issues. All you need to do is slap on a complete upper and you are good to...
I have a complete lower for sale. It started as a stripped aero m4e1 lower so it can be a rifle or pistol(if you swapped out the stock). It’s has only been taken out once to test function. It functioned perfectly with no issues. All you need to do is slap on a complete upper and you are good to...
Complete Colt 6920 Lower. Used for a couple thousand rounds. All factory, priced to sell.
$400 local sale in Hillsboro/Beaverton/Portland
No trades please
Buyer covers FFL fees
PM with phone number for dibs/fastest response
Hello,
For sale is an Aero M4E1 complete lower.
Contains a MilSpec trigger, BCM Gunfighter grip, RailScales CSMR Mag Release, Geissele Maritime Bolt Catch, and Radian Talon Safety. Has a Magpul ACS stock.
$250 cash, buyer is responsible for transfer fee. Can meet in Gresham, Portland, or...
Only about 250-300 rounds fired with it as I was just using as a place holder while waiting for a specific high end lower. I did swap out the magazine release to a silver one because I wanted the black one on my new lower. Other than that it is exactly what you will see at the below link...
Trying to save up some money for other projects, and I know if I don't sell this it will become another compete rifle or pistol. A Anderson lower with CMMG parts kit, A2 Grip with enhanced sleeve, QD endplate and large castle nut, ambidextrious safety selector, H3 buffer and carbine spring, and...
Brand new PRI(Precision Reflex Inc) AR15 forged lower receiver 100% complete with PRI parts, schmid tool FCG, Milspec Carbine Buffer and Receiver extension. This is a custom lower and is a one-off. Ordered to clone a Mk12 mod 0, but never failed the time to finish. It is a Virgin lower, meaning...
I have an excellent condition, stupid low round count CMT billet lower built for long range shooting.
Build is as follows:
CMT Billet Lower
POF 3.5lb Single Stage Flat Face Trigger
KNS Anti-Walk Pins
Seekins Mag Release Button
Seeking Enhanced Bolt Catch/Release
KNS Pivot and Take Down Pins...
Price dropped
New PSA Lower with SB Tactical brace, kak buffer & Magpul AFG & trigger guard.
Let me know if you have something up or down to trade, AR or handgun related, knifes (spyderco or OTF), etc. I have another new AR-15 posted as well. Thanks
Colt Complete M4A1 lower. Has a Geissele SSA trigger and B5 SOPMOD contract stock. CQD endplate as well. Lower has exactly 100 rounds fired.
I am not interested in any trades.
$850
If shipping: PayPal/Zelle only. If PayPal, gift or add 4% and always 100% discreet. Leave the comment section...
Putting my PWS MK1 mod2 complete lower back up for sale because the last deal fell through, it’s factory complete with a Geissele G2S trigger installed
$450
Comes as pictured. In fantastic condition. Low round count. Has repro CAR stock and CQD rear sling end plate. Firm on price. No trades. Thanks!
$500 SOLD
No trades
Please see feedback for confidence.