摘要:
The present invention is a shotgun undercarriage, for use in conjunction with a top receiver, barrel, fire control, carrier assembly, magazine assembly, and action system. The undercarriage has an integral and unitary stock, bottom receiver, forearm and integrated bolt buffer. The stock is adaptable for housing an action spring; the bottom receiver has at least one opening for mounting the fire control, the carrier assembly and the top receiver; and the forearm has a magazine housing. The bottom receiver and forearm cooperate to form at least one mounting surface capable of receiving the barrel and the top receiver.
摘要:
The present invention is a shotgun undercarriage, for use in conjunction with a top receiver, barrel, fire control, carrier assembly, magazine assembly, and action system. The undercarriage has an integral and unitary stock, bottom receiver and forearm. The stock is adaptable for housing an action spring; the bottom receiver has at least one opening for mounting the fire control, the carrier assembly and the top receiver; and the forearm has a magazine housing. The bottom receiver and forearm cooperate to form at least one mounting surface capable of receiving the barrel and the top receiver.
摘要:
Thermoplastic polyester composites are prepared from compositions comprising a filler, at least one macrocyclic poly(alkylene dicarboxylate) oligomer and a polymerization catalyst therefor. The use of polyester oligomer mixtures is preferred, and they may be present in liquid or solid form. The polyester composites prepared therefrom are characterized by excellent properties including solvent resistance.
摘要:
The present invention relates to a recoil pad for a firearm. The recoil pad includes a solid viscoelastic core, preferably formed using a polymer gel, and having a cross sectional shape substantially similar to that of the stock to which the recoil pad is mounted. The recoil pad further includes a covering enclosing at least a portion of the core with the covering having substantially the same shape as the core.
摘要:
The crystallinity of polyesters prepared from macrocyclic poly(1,4-butylene terephthalate) oligomers is reduced and cracking of molded parts suppressed by the incorporation therein of at least one other linear or macrocyclic poly(alkylene dicarboxylate) oligomer, such as poly(ethylene terephthalate) or poly(1,4-butylene isophthalate). It is preferably employed in macrocyclic form. The resulting compositions can be combined with inert fillers and polymerized.