Kross Airsoft Design MK23 Angled M4 HPA Adapter

If you've been running a Tokyo Marui MK23 as a stealth DMR or sniper sidearm, you already know the standard mag profile sticks down further than you'd like when crawling, peering over cover, or shooting prone. The KAD MK23 Angled M4 HPA Adapter solves that by canting the M4 magazine forward — your gun keeps its M4 capacity but the mag tucks tight against the frame, dropping the silhouette noticeably.

Printed in tough MJF Nylon 12 (the same material KAD use for their flagship adapters), the body absorbs incoming hits without splitting. The mag release has been recessed slightly to protect it from stray BBs that have a habit of finding exposed buttons, and the release geometry is tuned for a natural thumb sweep rather than the awkward reach earlier MK23 adapters needed.

Compatibility note worth reading before buying: this fits all TM MK23 magazines and older ASG/SSX23 magazines (when self-fitting). It does not play nicely with ARES mags. EPM1 M4 magazines give the cleanest feed.

Why airsoft snipers run angled HPA

Crawling forward to a hide site is when straight mag wells betray you — they catch on undergrowth, dig into your chest, and lift the pistol off your line of fire. An angled adapter restores the low silhouette of the original MK23 while giving you 200+ rounds per change instead of 90 across three mags. Pair it with a quality regulator and a coiled HPA line and you've built one of the most efficient sniper setups in airsoft.