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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.
SOLD
- buyer pays transfer fee. FFL in Gresham or Sandy area.
Aero precision lower. Note that this was part of a rifle and is therefore being sold as a rifle. You cannot legally make it into a pistol, only a rifle.
Very low round count (<300)
Aero Precision complete lower plus:
CMC 3.5 lb...
Very little use Knights Armament SR-15 Complete lower and Geiselle SSA Trigger.
Will only trade for a Colt M4A1 or US Property Stamped lower. May consider a standard 6920 M4 Carbine lower plus 300 cash. Will consider an Aimpoint Comp m2 or m3 as partial trade
Barely used Palmetto PA10 Gen 2 lower. Comes with FDE Magpul furniture and has PSA's EPT trigger with JP springs (stock springs included). Comes as pictured. No trades please and can easily ship for actual cost of postage.
$120 SOLD
***Trade Pending ***
I have an unfired PWS MK1 Lower receiver. This was on an Mk114 Mod 2 that I purchased from the original owner but I have an Mk116 Mod 2 so I will just swap uppers and I don’t need the second lower.
The PWS lowers are ambidextrous (mag release, bolt release, and safety...
I'm selling a perfect condition Aero Precision M16A4 complete lower. These are very hard to find. It has a KAC ambi safety and the UID label is from Carolina Laser Works with the correct Cage Code for Aero Precision. This will be perfect for a retro build. Not a mark of flaw on it. $280...
Hello!
I’m putting together my first AR-15 and I am in search of a BCM COMPLETE LOWER to start the process. If you have a used one, let me know and we can make a deal. If you don’t have one, please point me to the best deal that you have found! Let me know! Thanks.
I have a complete Tactical Innovations T15 AR lower receiver. Built awhile back, function tested. Was going to build a 300 blk but went different direction.
$300 firm. Buyer pays ffl fees.
Will not deliver or ship. Buyer comes to McMinnville. I do not respond to emails. If interested text...