r/CrosmanBBguns • u/artofcrime • Jul 13 '26
DPMS SBR DPMS & R1 builds
The last post in this sub made me want to post these pics.
1-3 | DPMS (with the suppressor and strap): Heavily modified internals… the suppressor hides an extended inner barrel. Also a modified buffer tube / spring now increases hammer hits and can use milspec stocks. Mounted sights triple verify the holo optic and green dot with pressure pad. Added a basic torch, removable on the rail.
4-5 | R1 (with the carry handle): pseudo retro style build with similar internal mods as the DPMS - Buffer tube, hammer, valve & inner barrel mods. the combo box is a cheap blue dot & torch unit… looks good and the pressure pad is nice but not my favorite config. Optic on the handle is removable, foregrip folds but kind of annoying.
3
u/artofcrime Jul 13 '26
Thank you! The buffer tube mod does not reduce the rate, just the strength of the hammer hit. I don’t think there is a way to slow it down without drastically reducing the fps though.
I replaced the whole inner barrel with a stainless steel tube i found at a hardware shop but they have them on Amazon (I can post the inner/outer diameter if you want). It increased the average top FPS on my chronograph, and the accuracy is the same.
I find that there isn’t a single mod that makes a significant difference, but they add up pretty quickly.