Overview
The XCR utilizes a heavy duty bolt and extractor connected to an AK-47 type gas piston. The bolt and extractor are designed and patented by Robinson Arms, and promoted as offering higher performance over eight lug M16/M4 type bolts. Other features include a folding stock which eases storage space consumption and deploying from a vehicle, in addition to folding M4 Carbine style stocks for those who prefer length of pull adjustments; it also has a monolithic top Picatinny rail with side and under-barrel rails, and forward assist integrated into left-side charging handle. Approximately 5,000 XCR carbines have been sold since its introduction in 2006.
Read more about this topic: Robinson Armament XCR
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