By Geremy Chubbuck () Disclaimer: This list is correct to the best of my knowledge, however, I accept absolutely no responsibility for the accuracy of this information or for the consequences and/or damages occurring from any inaccuracies. I have compiled this list for the purposes of sharing information only. This is not intended to be used in any way except for personal entertainment. It is a compilation of both personal information and information submitted from others from the Internet. ALL SERIAL NUMBERS SHOULD BE VERIFIED FROM THE MANUFACTURER PRIOR TO ANY PURCHASE OR ASSEMBLY. It should be noted that it is a felony to possess a Post-Ban (newly assembled after Sept 13, 1994) assault weapon.If any information presented here is found to be incorrect or you have additional information to contribute, please contact me via E-Mail () and I will update and re-issue the list.Note: All items marked with a single asterisk (*) are taken from http://home1.gte.net/bblakley/ban/index.htm. The year/serial numbers under Colt SP series was forwarded to me by an individual whose return address I no longer have. Double asterisk (**) under Bushmaster, a person on the internet e-mailed me that he had a lower that was shipped stripped (thus not a complete rifle) in 1991 from Bushmaster with serial #0327XX - ALWAYS CALL TO VERIFY.Advanced ArmamentsNo information - Apparently machined from bar stock aluminum, lowers are marked as M-15. American Spirit Arms (Formerly "Sun Valley Traders")ALL lowers are Post-Ban. Began introduction of lowers and rifles in mid/late 1998. Noted as having good fit & finish. Also, reported to be manufactured by Lewis Machine & Tool. Armalite/Eagle 800-336-0184Slightly over S/N 30,000 was the Pre-Ban cut-off, call to verify.* (Some Eagle lowers below the 30,000 range were determined to be POST ban by BATF - call to verify) Armalite sells Eagle lowers, but sells factory complete rifles with Armalite lowers. BohicaMade stainless steel lowers, rumored to have also made AR-15 pistols. Lower marked M16-SA. This is NOT verifiable info as it came from the Internet. Out of Business. Bushmaster 800-998-SWAT Below L051000 - Assembled Pre-Ban Rifles and some pre-94 lowers.**L051001-L063000 - Mixed Pre-Ban Assembled Rifles and Pre-Sept 94 Lowers (Call to verify)L063001 and Up - Post-BanCentury ArmsLower marked CIA. All are Post-Ban. Made with Olympic Arms Receivers under contract. Colt 800-962-COLTCC001616 and Below - Pre-BanCH019500 and Below - Pre-BanGC018500 and Below - Pre-BanLH011326 and Below - Pre-BanMH086020 and Below - Pre-BanNL004800 and Below - Pre-BanSL027246 and Below - Pre-BanSP360200 and Below - Pre-Ban1963 SP00001-SP00023**1964 SP001011965 SP025011966 SP056001967 SP082501968 SP107501969 SP14000-SP146531970 SP15001-SP154731971 SP160011972 SP194011973 SP242011974 SP326011975 SP438011976 SP553011977 SP676511978 SP83400ST038100 and Below - Pre-BanTA10100 and Below - Pre-BanBD000134 and Below - Pre-Ban (AR-15A3 Tactical Carbine - very rare model)MT00001 and Above - Post-BanBK000001and Above - Post Ban (CAR-A3)CST000001 and Above - Post-Ban (Began Late 1997 Production)CMH000001 and Above - Post BanCCH010000 and Above - Post Ban MT6700, MT6700C and MT6700CH series, 1998 productionDalphon (360) 427-6867All are POST ban. Cast 356-T6 Aluminum, hardcoat anodized per mil-spec A-8625 DPMS 800-578-3767Below 10300 - Pre-Ban.Some or all lowers are cast. Black in color. Some lowers are Stainless Steel.Eagle Arms 309-944-6939Now called ArmaLite. They will not give out a list, but will look up on an individual basis. Lower receiver serial numbers DO NOT begin with EA. Essential Arms (337) 945-0185 All are Pre-Ban as they went out of business in 1993. (DPMS bought them prior to the Ban) Call DPMS Lower receiver serial numbers begin with EA. Some or all lowers are cast. Light gray coloring. It is rumored that Ruger investment casted the lowers for Essential Arms. ***Updated by Typeo1313*** Essential Arms has recently started produceing recievers again. Most if not all are marked J-15-F. Those who live in states still under the AWB should verify their receiver is compliant with their states laws.Frankford Arsenal All are pre-ban. As rumor has it, Olympic Arms produced the lowers for Frankford Arsenal Call Olympic Arms and then Frankford assembled the weapon. A2 configuration lower. Frankford Arsenal went out of business in 1987. (Info from ) Hesse Arms All AR-15’s are post ban. Manufacturing began late 1997/early 1998.J.L.M & Sons* (603) 425-1860SC001 thru SC250 are Pre-Ban. All others are post ban.Knights Armament Co. All AR-15’s are post ban, very few AR-10’s are pre-ban. No further info at this time. Military Manufacturing (M2) (FAX 702-263-7875)All were military/law enforcement only. Full auto lowers were standard, semi were optional. Lowers were machined form raw bar stock with improvements incorporated - 18deg magazine angle and square mag release. (See: http://www.m2corp.com/HOME.htm) Nesard See "Sendra" below. Olympic Arms 360-459-7940· 4-numbers only - very very old. Probably machined from bar stock. · 1-letter and 4# - older receiver, but forgings. (Some are newer, POST ban castings - call to verify.) · 2-letters & 4# - most receivers follow this pattern. · 2#, 2 letters, 4# - the first two #"s are year of manufacture of the lower. · 2 letters, 6# (separated 2 & 4 - e.g. SA 96 0000) - first 2 #"s are year of manufacture. · "ICR" marked lowers are an European customer’s overrun, has an unused additional hole - all ICR lowers are post ban. Olympic Arms Manufacturer’s Notes:1. There were some odd variations and some custom serial numbers mixed in thru the years also. And, some receivers manufactured after the ban have the year stamp after the model name, not in the serial #. And if you don"t see a year stamp on the receiver, it is not necessarily pre-ban. 2. Serial numbers that end in "D" were duplicates and one was changed using this letter. 3. Recently some serial numbers have left with one or two letters followed by FIVE numbers. The last numbers are either 5"s or 0"s. 99.9% of these are post-ban. 4. "Older" does not always mean pre-ban as per Corey Sattler. 5. "BL" serial number series lowers are transitional with some pre and some post ban. If you have a "BL" you’ll have to call to verify for certain. Professional Ordinance All are post ban (including all of the pistols). PWA (360) 438-398335222 and Below - Pre-Ban (Note:Some lowers are cast not forged. Out of business) Post-ban have a year prefix in the serial number. Rumored to have only sold lowers. Rocky Mountain ArmsProducer of AR-15 type pistols. Sendra Post-ban receivers have a circle milled into the side of the magwell. They were originally bead-blasted to a non-glare finish. All others are pre-ban. (This is unverified info…) Also, they used to be NESARD.
Rumored to have been owned by Dick Drasen (currently M&A Parts) and produced lowers only out of Barrington, Illinois. No complete guns were sold (again, unverified info).SGWOlympic Arms was started as Schuetzen Gun Works (SGW), Pre-ban receivers have "Stop Sign" logo.