Sutty90 Posted April 6, 2020 Report Share Posted April 6, 2020 Hey all! So I've got an old TM M4a1 (2007ish?). The type before the spiked/start barrel nut! I'm looking to get back into the sport and wondering what initial upgrades you would recommend, as I'm quite keen on keeping the rifle. It's a shame that I can't put a new handguard on, I'd really like a RIS, but the battery is located there, plus I have the old barrel nut. I'm thinking a tighter barrel and do something to the hop up. I used to run it on 8.4 batteries. Fired around 280fps. Any help would be great, thanks! Link to post Share on other sites
jv83 Posted April 6, 2020 Report Share Posted April 6, 2020 What do you mean about the barrel nut? I thought only older models like the xm177 and m16 used the old school design.As I recall there are lots of rails that fit the old TM m4, quite a lot of these will also fit a battery. Link to post Share on other sites
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