首先我们先来归纳一下目前乐辉下供短剑的情报。可靠情报是乐辉下供短剑采用异形波箱（如图），有下供。
存疑的情报是拉机柄抛壳窗联动，尼龙枪身，比较仿真的托芯安装，上下分体，快慢机可以三连点射

如果存疑情报是真的，那么无疑水弹aeg化进了一大步。但目前的原因是乐辉并未发布短剑，我认为可能原因如下

1.某位吧友的发言

2.ldt说得对

我个人的一些猜想:首先，据某些视频中，乐辉已经推出了白模。再加上416二代的经历，所以卫星失联的几率相比于某些只有一些对话和某卫星大厂相比，会小一些。
其次，乐辉下供短剑可能会和ak105，锦明9上市时间相似。

目前的成人水弹竞争较激烈，可能的产品有还原且全行程拉栓ak105，水弹次世代ldt416，还有波箱大厂分体ar锦明9，信息不多的分体核心416。乐辉很可能会在他们的发售日前或和他们同期发售，就像目前的渣渣辉98k一样，共同参与竞争。毕竟如果不被禁止，下一代水弹就可能从电鸡向aeg靠近。到那时，乐辉短剑毫无优势。我想乐辉也不会做这种傻事。

然后，我们可以发现乐辉短剑的气缸较长，气量应该较多。如果就凭借短剑的短枪管，并无法充分利用这些气体。甚至可能由于多余气体导致精度下降

可能乐辉会学习国外的民用短剑把枪管延长，并把其伪装为消音器，充分利用气体。顺便，希望可以自带上旋。

最后是现实短剑的评价，请大家不要迷信短剑。
短剑的弹匣释放钮位置诡异，可能会误触碰导致掉弹匣。（这里说一句，短剑水弹的弹匣肯定不能摔。而如果想换弹匣时拿到空弹匣，按照短剑的弹匣释放钮位置可能会有些难受。）

短剑冲锋枪型重量为2.7kg（复制自英文wiki）同样发射.45acp的ump45为2.5kg，ump45较轻。而且由于短剑的发射方式，重量较集中。而ump重量则更轻，重心更加平衡

据某些使用者称，短剑手感像一块小砖头。
短剑后座并非非常小，由于其极高的射速，抖动非常明显且后座诡异。并不好控制。

Albania Special Operations Battalion UMP9 _ _ [12]
Australia New South Wales Police Force Tactical Operations Unit UMP40 _ _ [13][14]
New South Wales Corrective Services Hostage Response Group & Extreme High Security Escort Unit UMP40 _ _ [15][16]
Victoria Police Critical Incident Response Team UMP40 _ _ [17][18]
Belgium Federal Police UMP9 _ _ [19]
Brazil Special Operations Command of the Brazilian Army UMP9 _ _ [20]
Amphibious Commandos of the Brazilian Marine Corps UMP9 _ _ [20]
Canada Brantford Police Service Emergency Response Team UMP40 _ _ [21]
Egypt Sa'ka Forces UMP45 _ _ _
France Gendarmerie Nationale (Regular Squad) UMP9 _ _ _
Police Nationale UMP9 _ _ _
Georgia Georgian Special Forces UMP45 _ _ [22]
Italy Italian Special Forces, Carabinieri UMP40 _ _ _
Jordan Jordanian Special Operations Forces _ _ _ [23]
Kosovo Special Intervention Unit SIU (Former GSI / SIG - FIT) UMP45 _ _ [24]
Latvia Latvian Army UMP9 _ _ [25]
Liechtenstein Special Police Unit - _ _ [26]
Security Corps - _ _ [27][26]
Lithuania Lithuanian Special Operation Forces UMP45 _ _ _
Malaysia Pasukan Khas Laut (PASKAL) counter-terrorism team of the Royal Malaysian Navy UMP45 _ 2006 [28][29]
Malaysian Maritime Enforcement Agency UMP9 _ _ [30]
Mexico Mexican Marines _ _ _ [31]
Morocco Royal Moroccan Gendarmerie _ _ _ _
Philippines Special Action Force of the Philippine National Police UMP45 _ _ [32]
Poland Policja _ _ _ [33]
Romania Land Forces special operations battalions UMP9 _ _ [34]
Naval Forces special operations group (GNFOS) UMP9 _ _ [35]
Serbia Special Brigade of the Serbian Army UMP9 _ _ [36]
Slovakia 5th Special Forces Regiment of the Armed Forces of Slovak Republic UMP9 _ _ [37]
South Africa South Africa National Intervention Unit - A special operations element of the South African Police Service (SAPS) UMP9

Romania Land Forces special operations battalions UMP9 _ _ [34]
Naval Forces special operations group (GNFOS) UMP9 _ _ [35]
Serbia Special Brigade of the Serbian Army UMP9 _ _ [36]
Slovakia 5th Special Forces Regiment of the Armed Forces of Slovak Republic UMP9 _ _ [37]
South Africa South Africa National Intervention Unit - A special operations element of the South African Police Service (SAPS) UMP9 _ _ [38]
Spain Mossos d'Esquadra UMP9 _ _ [39]
Spanish Army _ _ _ [40]
Thailand Underwater Demolition Assault Unit of the Royal Thai Navy UMP9 _ _ [41]
United States U.S. Border Patrol UMP40 _ _ [3]
Pentagon Force Protection Agency UMP40 _ _ [42]
Oregon Department of Corrections (SWAT) UMP40

从wiki复制的ump使用者