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Rock River Arms

Rock River Arms is owned and operated by brothers Mark and Chuck Larson. Between 1981 and 1991 the Larson’s worked at Springfield Armory, Inc, where Mark was the head armorer. From Springfield Armory, the Larson’s went into partnership with Les Baer to form Les Baer Custom and build custom 1911 pistols. Parting ways with Les Baer in 1993, the Larson’s began to build AR-15 type rifles for Eagle Arms in Coal Valley, Illinois. At around the same time, they began their own venture, Tolerance Plus (the name was later changed to Rock River Arms), producing custom 1911 pistols. The Larson brothers severed their connection with Eagle Arms in 1997 when that firm moved to Geneseo, Illinois.

Around the same time, Rock River Arms began to build AR-15 style rifles. For a time, Rock River Arms also produced M1911 pattern pistols in addition to the AR-15 rifles, however eventually they dropped that line and now focus their production exclusively on AR-15  and M4 pattern rifles.

Products (Total Items: 11)
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Rra Lar-15 Car A4 223rem 16 Tele Gas Block 30rd
In Stock
Rra Lar-15 Elite Car A4 223rem 16
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Rra Lar-15 Elite Comp 223rem 16 Ergo Suregrip
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Rra Lar-15 Predator Purs Uit 223rem 20 Dlxhg New
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Rra Lar-15 Tactical Car A4 223rem 16
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Rra Lar-15 Varmint Eop 223rem 16 Ss Bull A2 St
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Rra Lar-8 308win 16 Mid Length A4 Adj Stk Hogue
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Rra Lar-8 Std Operator 308win 20 A2 Stk Hogue
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