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    # SBR-12戰鬥步槍 **SBR-12**是由賽伊納國際以HK-417為基礎研製的戰鬥步槍,使用於瑟拉特羅陸軍。SBR-12使用7.83×54彈藥及可卸式的30發彈匣,由於其使用的特殊口徑彈藥,以及瑟拉特羅的政策,SBR-21從未輸出到其他國家。 |**SBR-12戰鬥步槍**| | :-----: | |![](https://i.imgur.com/9EdgEiu.png)| |**類型**: 戰鬥步槍| |**原產地**: 瑟拉特羅| || |**服役紀錄**| |**服役期間**: 2012年-| |**使用方**: 瑟拉特羅陸軍| |**參與戰爭/衝突**: [反恐戰爭](https://zh.m.wikipedia.org/wiki/%E5%8F%8D%E6%81%90%E6%88%98%E4%BA%89)| || |**生產歷史**| |**研發日期**: 2009-2012年| |**生產商**: 賽伊納國際| |**單位成本**: $2300美金| |**生產日期**: 2012年-| |**衍生型**: 狙擊型| || |**基本規格**| |**重量**: 2.98公斤(6.56磅)| |**長度**: 990毫米/1248毫米(連刺刀)/702毫米(收起槍托)| |**槍管長度**: 470毫米(18.5吋)| || |**子彈**: 賽伊納國際7.83×54毫米步槍彈| |**口徑**: 7.83×54毫米| |**槍機**: 短行程導氣式活塞、轉拴式槍栓| |**發射模式**: 半自動、全自動,可選射| |**射速**: 600發/分鐘| |**槍口初速**: 740米/秒| |**有效射程**: 700米| |**供彈方式**: 賽伊納國際7.83×54毫米30發彈匣| |**瞄具**: 折疊式金屬瞄準具| ## 研發歷史 :::spoiler {state='open'} 展開/收起 瑟拉特羅陸軍在2007年時打算採購一款新型戰鬥步槍以取代過時的SBR-73,《遂展開21世紀新型戰鬥步槍招標案》。 共有三家公司參與投標,分別為賽伊納國際、尼亞紅鐵工業、以及利博緹軍事承包商,皆為瑟拉特羅國內的國防承包商。 賽伊納國際在HK417的基礎上參考了不少外國槍械,包括AK-74M、豐和64式等,設計出了XBR-11。該槍最終贏得了招標案,並在進行細節修飾後於2012年投入量產,命名為SBR-12。 ::: ## 設計 :::spoiler {state='open'} 展開/收起 SBR-12採用與HK416和HK417相同的短行程活塞傳動式系統,比AR-10、M16及M4的導氣管傳動式更為可靠,有效減低維護次數,從而提高效能,並且可以在擊錘未被扳倒的情況下撥至保險位置。 SBR-12採用摺疊式槍托設計,槍托底部裝有緩衝塑膠墊以降低射擊時的後座力,全槍只有機匣頂部有一條戰術導軌供裝上瞄具使用,不過護木有兩腳架,以供狙擊使用。 由於SBR-12所使用彈藥的威力強大,加上早期型的機匣零件不太堅固,導致早期型膛炸機率十分高,達到了SBR-73的三至四倍。不過在後期進行了加固後,此情況得到了改善。 ::: ## 特徵 :::spoiler {state='open'} 展開/收起 SBR-12最大的特徵為其威力與精準度與其他戰鬥步槍相比較高,同時亦提供兩腳架供狙擊時用,可於600米使用機械瞄具精準命中靶子中央,因此亦被部分陸軍士兵戲稱為「狙擊用的步槍」,而事實上,SBR-12的確有狙擊型,名為SBR-12 SPR。另外SBR-12使用了輕量化複合材料,使其重量比SBR-73輕上了不少。 :::

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