Gun World - - Gun World - BY ROBB MAN­NING

An en­tire ar­ti­cle could be writ­ten about this, but in a nutshell, there are two pat­terns of large-re­ceiver ARs: the Eu­gene Stoner-de­signed AR-10 pro­duced only by Ar­malite, and the SR-25 (Stoner Ri­fle) de­vel­oped by Eu­gene Stoner with Knights Ar­ma­ment Cor­po­ra­tion (KAC).

Due largely to in­creased parts com­mon­al­ity with the AR-15, the SR-25 type took off in pop­u­lar­ity and be­came the de­sign all cur­rent man­u­fac­tur­ers would base their de­signs on—most no­tably in the civil­ian mar­ket, the DPMS LR-se­ries. With no MIL-SPEC stan­dard, many man­u­fac­tur­ers have vary­ing de­grees of de­sign dif­fer­ences with the SR-25.

The one thing that has seen some sem­blance of stan­dard­iza­tion is the mag­a­zine. There are a few that use other styles, but most mak­ers use SR-25com­pat­i­ble mag­a­zines. These mag­a­zines are gen­er­ally la­beled as be­ing com­pat­i­ble with LR/SR or M110 (the mil­i­tary des­ig­na­tion for the KAC sniper/des­ig­nated marks­man ri­fle) sys­tems. Other mag mak­ers just call them 7.62 or .308 AR mags.

The dilemma for this ar­ti­cle is what to call these mag­a­zines as a gen­er­al­ized group. “LR/SR-25com­pat­i­ble mag­a­zines” would be the most ac­cu­rate; how­ever, most shoot­ers know the ri­fle as the AR-10, not the LR/SR-25. Nev­er­the­less, call­ing it an AR-10 mag­a­zine isn’t tech­ni­cally cor­rect and could lead to con­fu­sion when pur­chas­ing mag­a­zines. The rea­son is that com­mer­cial mag­a­zines aren’t marked as AR-10, ex­cept for those made spe­cific to the Ar­malite.

Just to clar­ify and to avoid con­fu­sion, this ar­ti­cle refers to the large-re­ceiver AR as an “AR-10,” be­cause that’s what most shoot­ers know it as, but we’re re­fer­ring to mag­a­zines for the LR/SR-25 pat­tern ri­fle.

Just know that when pur­chas­ing mag­a­zines, un­less you own the ac­tual Ar­ma­light AR-10 pat­tern ri­fle, most mag­a­zines will be com­pat­i­ble with your ri­fle. Be sure to read the pack­ag­ing to con­firm.

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