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COMPLETE Lowers
At MontanAAR15.com we carry several US manufactured AR-15 Lower receivers to include SAA, Aero Precision, SOTA & Strike Industries. We carry standard Milspec Forged lowers, Aero's Forged M4E1 and SOTA's Billet Lower Receivers.
Buying an AR-15 lower receiver is the serial numbered part, the heart and beginning of your weapon. It is only a "receiver/other" when you take possession of it from your dealer, it is not yet either a "long gun" or "handgun." And know that these "receivers" can all be built into either Carbines & Rifles or into Pistols or SBR's (Short Barrel Rifles requiring ATF registration, taxes paid etc.), you just need to follow federal and your state's laws.
Every lower we sell takes all standard AR-15 parts from original milspec to any and every other industry standard upgraded or modified part for the AR-15 platform. These receivers are also almost all marked "CAL: MULTI" so if your location's laws require it be marked with the caliber you built it into, you are covered. And you can build these AR-15 lowers into any caliber the AR-15 has been built into from original/standard .223 Rem/5.56x45NATO to the very popular 300 Blackout to better match or hunting calibers like the 6.5 Grendel, 6.8 SPC and even the heaviest hitters like the 450 Bushmaster & 458 SOCOM.
NOTE: These are FIREARMS meaning all AR-15 Lower Receivers from strips to completes must be shipped and transferred through your local FFL gun dealer. Please contact your chosen dealer and have them send us a copy of their current FFL for your lower(s) transfer.