This is another sticky one. The PSG1 is similar to a HK91 which is banned by name. Like the M1A (banned) vs Polytech M14 (ok) there is not 100% parts interchangeability (and that only took a metric vs SAE thread difference.) But exactly what has to be interchangeable?
1) The foreend = incompatible. A PSG1 foreend will not attach to a HK 91 type rifle or visa versa.
2) Bolt head = somewhat incompatible. A PSG1 bolt/carrier will not work in a HK91. The extractor is much larger and requires the barrel to be notched to clear it. However, A HK91 complete bolt/carrier will work in a PSG1.
3) Iron sights = incompatible. PSG1 has no front or rear iron sights or even a place to put them therefore the HK91 version will not fit.
4) Forward assist = incompatible. The PSG1 has a forward assist that goes into a housing welded on the right side of the receiver. Those parts will not fit on a HK91 (you would have to weld the forward assist housing on.)
Sounds like enough differences to be MD legal? They are definitely not 100% parts compatible. Does any one of these make it MD legal (for example: many PSG1 clones skip the rare & expensive bolt/carrier and use a generic hk91 set.)
1) The foreend = incompatible. A PSG1 foreend will not attach to a HK 91 type rifle or visa versa.
2) Bolt head = somewhat incompatible. A PSG1 bolt/carrier will not work in a HK91. The extractor is much larger and requires the barrel to be notched to clear it. However, A HK91 complete bolt/carrier will work in a PSG1.
3) Iron sights = incompatible. PSG1 has no front or rear iron sights or even a place to put them therefore the HK91 version will not fit.
4) Forward assist = incompatible. The PSG1 has a forward assist that goes into a housing welded on the right side of the receiver. Those parts will not fit on a HK91 (you would have to weld the forward assist housing on.)
Sounds like enough differences to be MD legal? They are definitely not 100% parts compatible. Does any one of these make it MD legal (for example: many PSG1 clones skip the rare & expensive bolt/carrier and use a generic hk91 set.)