Specna Arms - SA-B12 M4 8" KeyMod AEG m45a1 Several different versions were then

Several different versions were then spun off from the 551 over the years which brings us to the one we have today

This 16" outer barrel kit is a straight drop in for all of the SRS range

Lazer MOLLE webbing attachments

and at a price most airsoft players can afford

barrel & lower frame

Specna Arms - SA-B12 M4 8" KeyMod AEG m45a1 Several different versions were thenNew in from Specna Arms is this SA B12 8" KeyMod Rail M4. This model features a 8 modular, KeyMod handguard. The KeyMod module can be expanded upon with dedicated segments, for instance, RIS rails (KeyMod nuts) in any position or configuration due to holes around the handguard (KeyMod slots) its also fitted with a Crane Style Stock and a Marine traded marked metal body. The gearbox is rewired and is the new SAEC system which means the main Spring can