Early and later Colt SP1 Sporter magazine

[jmoore]

No small lettered ones have turned up yet, just the Large.

The mag bodies are similar to the Armalite marked one described by Roscoe Snyder:

[RCS]

I have only seen two AR-15 magazines with the small letters/numbers, one in an early three digit Colt SP1 and the other magazine had the cartridge counter holes in the side

[gap]

I have only seen two AR-15 magazines with the small letters/numbers, one in an early three digit Colt SP1 and the other magazine had the cartridge counter holes in the side

I have two 20 round Colt AR-15 mags marked .223 with small letters/numbers. No cartridge counter holes in the side. Can someone give me some insight as to value?

[RCS]

The early AR-15 magazine with the small letters/numbers that came with this three digit Colt SP1, had the factory magazine block installed (magazine only held five rounds). These early magazines would be correct to have with early Colt AR-15 SP1 rifles and as too the value ?
worth a little more than the standard magazine that came with the early SP1 rifles - the only
value is for the collector of an early SP1. Photo shows a three digit SP1